153,784 species and infraspecific names are in the database, 21,012 images, 59,550 bibliographic items, 412,721 distributional records.

Taxonomy Browser

Genus: Closterium

Higher Taxonomy

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Rank

Name

Authority  

# Species

 

Empire

Eukaryota

Chatton  

44,849

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Kingdom

Plantae

Haeckel  

18,726

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Subkingdom

Viridiplantae

Cavalier-Smith  

11,383

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Infrakingdom

Streptophyta infrakingdom

C.Jeffrey  

4,758

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Phylum

Charophyta

Migula  

4,758

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Class

Conjugatophyceae (Zygnematophyceae)

Engler  

4,004

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Order

Desmidiales

C.E.Bessey  

2,806

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Family

Closteriaceae

Bessey  

209

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Genus

Closterium

Nitzsch ex Ralfs  

206

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Subordinate taxa

Rank

Name

Authority  

Fossil

# Species

 

Forma

abbreviatum

Prescott  

 

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Variety

abruptum

Claassen  

 

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Variety

abruptum

W.B.Turner  

 

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Forma

abruptum

West & G.S.West  

 

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Forma

abruptum

(Borge) A.J.Brook & D.B.Williamson  

 

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Forma

abruptum

(Borge) A.J.Brook & D.B.Williamson  

 

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Species

abruptum

West  

 

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Variety

acerosum

M.Hirano  

 

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Forma

acerosum

W.B.Turner  

 

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Variety

acerosum

Gutwinski  

 

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Forma

acerosum

Borge  

 

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Forma

acerosum

Kossinskaja  

 

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Variety

acerosum

Klebs  

 

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Variety

acerosum

C.-C.Jao  

 

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Species

acerosum

Ehrenberg ex Ralfs  

 

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Variety

achillense

West  

 

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Forma

aciculare

P.E.E.Kaiser  

 

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Forma

aciculare

Elenkin  

 

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Forma

aciculare

Kisselev  

 

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Species

aciculare

T.West  

 

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Species

acuminatum

Corda  

 

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Variety

acutum

Petkoff  

 

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Variety

acutum

W.Krieger  

 

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Species

acutum

Brébisson  

 

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Forma

acutum

J.P.Keshri & D.Das  

 

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Variety

africanum

(Fritsch & Rich) Krieger  

 

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Variety

africanum

(Schmidle) Willi Krieger  

 

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Forma

alpestre

Irénée-Marie  

 

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Variety

alpinum

Schmidle  

 

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Variety

alpinum

(Viret) Grönblad  

 

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Species

amblyonema

Ehrenberg ex Ralfs  

 

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Species

amphiceps

C.-C.Jao  

 

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Variety

anastomosum

(West & G.S.West) Kurt Förster  

 

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Variety

angolense

West & G.S.West  

 

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Species

anguineum

D.B.Williamson  

 

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Variety

angustatum

Irénée-Marie  

 

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Forma

angustatum

D.C.Jackson  

 

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Forma

angustatum

Gutwinski  

 

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Variety

angustatum

E.O.Hughes  

 

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Species

angustatum

Kützing ex Ralfs  

 

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Variety

angustatum

West & G.S.West  

 

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Variety

angusticeps

Grönblad  

 

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Forma

angustissimum

Schmidle  

 

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Variety

angustius

E.O.Hughes  

 

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Species

angustum

Hantzsch  

 

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Variety

angustum

Borzécki  

 

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Variety

angustum

West & G.S.West  

 

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Species

annandalei

P.J.Brühl & K.P.Biswas  

 

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Species

antarcticum

Ehrenberg  

 

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Species

antiacerosum

De Notaris  

 

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Variety

apollonionis

Croasdale  

 

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Species

archerianum

Cleve ex P.Lundell  

 

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Species

arcuarium

E.O.Hughes  

 

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Variety

arcuatum

(Brebisson ex Ralfs) Rabenhorst  

 

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Variety

arcum

West  

 

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Species

arcus

A.J.Brook & D.B.Williamson  

 

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Species

areolatum

H.C.Wood  

 

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Species

arnoldianum

Y.V.Roll  

 

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Variety

asperum

West  

 

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Species

atomicum

M.I.Claassen  

 

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Forma

attenuatum

Kant & P.Gupta  

 

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Species

attenuatum

Ralfs  

 

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Forma

attenuatum

Irénée-Marie  

 

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Variety

atumidum

Willi Krieger  

 

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Variety

australe

Playfair  

 

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Forma

australiense

A.M.Scott ex Croasdale  

 

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Variety

baillyanum

Petkoff  

 

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Variety

baillyanum

Grönblad  

 

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Forma

baillyanum

(West & G.S.West) Irénée-Marie  

 

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Variety

baillyanum

(Nordstedt) Grönblad  

 

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Species

baillyanum

(Brébisson ex Ralfs) Brébisson  

 

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Species

balatonicum

Hortobágyi  

 

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Variety

balmacarense

P.Bourrelly & A.Couté  

 

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Species

bandericense

Petkoff  

 

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Species

barbaricum

M.I.Claassen  

 

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Forma

biclavatum

Kenetsuna  

 

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Species

biclavatum

Börgesen  

 

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Variety

biconvexum

Schmidle  

 

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Variety

bicurvatum

(Delponte) Playfair  

 

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Species

bitangchoianum

J.P.Keshri & D.Das  

 

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Variety

boergesenii

(Schmidle) Y.V.Roll  

 

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Variety

bonariense

Yacubson  

 

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Variety

borgei

(Willi Krieger) Ruzicka  

 

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Variety

borgei

Deflandre  

 

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Variety

borgei

Willi Krieger  

 

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Species

boyanum

M.I.Claasen  

 

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Variety

brasiliense

Börgesen  

 

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Variety

brasiliense

Børgesen  

 

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Species

braunii

Reinsch  

 

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Variety

brevior

Roy  

 

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Variety

brevirostratum

West  

 

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Variety

brevisetaceum

Tarnavschi & Radulescu  

 

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Forma

brevius

(West) Kossinskaja  

 

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Variety

brevius

(Nordstedt) Willi Krieger  

 

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Variety

brevius

(S.P.Petkoff) Willi Krieger  

 

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Variety

brevius

Prescott  

 

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Species

brunelii

Bourrelly  

 

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Species

bucharica

I.A.Kisselev  

 

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Species

caffrorum

Claassen  

 

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Variety

calosporum

Claassen  

 

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Species

calosporum

Wittrock  

 

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Variety

canadense

Bourrelly  

 

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Species

capense

Rabenhorst  

 

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Variety

capense

Nordstedt  

 

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Species

capillare

Delponte  

 

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Variety

casinoensis

Playfair  

 

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Variety

ceratium

Claassen  

 

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Species

ceratium

Perty  

 

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Species

chittagongianum

A.K.M.N.Islam & Akter  

 

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Variety

cingulum

Playfair  

 

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Species

claassenii

Levanets  

 

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Variety

clavatum

Hastings  

 

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Species

closterioides

(Ralfs) A.Louis & Peeters  

 

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Species

closterioides

(Ralfs) A.Louis & Peeters  

 

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Variety

coloratum

(G.A.Klebs) Playfair  

 

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Species

columbianum

G.S.West  

 

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Species

compactum

Nordstedt  

 

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Species

complanatum

Delponte  

 

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Variety

compressum

Klebs  

 

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Variety

compressum

G.A.Klebs  

 

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Variety

concavum

Klebs  

 

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Species

concinnum

T.Hinode  

 

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Variety

cornu

Claassen  

 

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Variety

cornu

West & G.S.West  

 

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Variety

cornu

(Lagerheim) Willi Krieger  

 

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Species

cornu

Ehrenberg ex Ralfs  

 

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Variety

cornutum

(Playfair) Willi Krieger  

 

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Forma

coronatum

Kurt Förster  

 

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Species

costatosporum

Taft  

 

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Variety

costatum

Graffius  

 

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Forma

costatum

Prescott  

 

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Forma

costatum

N.N.Woronichin  

 

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Species

costatum

Corda ex Ralfs  

 

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Variety

costatum

Wolle  

 

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Species

crassestriatum

W.Archer  

 

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Variety

crassius

(G.S.West) Willi Krieg & Gerloff  

 

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Species

crassum

Rabenhorst  

 

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Variety

crassum

Croasdale  

 

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Variety

crassum

(Grönblad) Willi Krieger  

 

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Variety

crassum

West & G.S.West  

 

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Variety

crassum

(West & G.S.West) Grönblad  

 

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Forma

crassum

Irénée-Marie  

 

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Species

croasdaleae

A.K.M.N.Islam  

 

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Forma

croasdaleae

Kurt Förster  

 

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Variety

curtum

Brébisson  

 

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Variety

curvatissimum

(West & G.S.West) A.J.Brook & D.B.Williamson  

 

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Variety

curvatum

Kant & P.Gupta  

 

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Species

cylindrocystis

Kützing  

 

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Species

cymbellaeformis

Claassen  

 

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Variety

cynthia

Claassen  

 

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Variety

cynthia

(De Notaris) Petlovany  

 

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Species

dacchense

A.K.M.N.Islam  

 

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Species

decorum

Brébisson  

 

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Species

decussatum

Kützing ex Ralfs  

 

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Species

delpontei

(Klebs) Wolle  

 

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Forma

dianae

Kossinskaja  

 

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Forma

dianae

Nagy-Tóth  

 

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Species

dianae

Ehrenberg ex Ralfs  

 

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Variety

didymotocum

Kossinskaja  

 

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Variety

didymotocum

Rabenhorst  

 

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Species

didymotocum

Corda ex Ralfs  

 

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Variety

dilatatum

(West & G.S.West) Willi Krieger  

 

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Variety

directum

(Schmidle) Ruzicka  

 

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Species

directum

W.Archer  

 

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Species

eboracense

W.B.Turner  

 

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Forma

eboracense

W.Turner  

 

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Forma

ehrenbergii

Prescott  

 

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Variety

ehrenbergii

Claassen  

 

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Forma

ehrenbergii

Irénée-Marie  

 

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Forma

ehrenbergii

Venkataraman  

 

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Forma

ehrenbergii

N.D.Kamat  

 

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Variety

ehrenbergii

Nordstedt  

 

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Variety

ehrenbergii

E.O.Hughes  

 

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Species

ehrenbergii

Meneghini ex Ralfs  

 

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Variety

elegans

(G.S.West) Willi Krieger  

 

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Species

elenkinii

Kossinskaja  

 

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Forma

elevatum

J.P.Keshri & D.Das  

 

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Forma

elongatissimum

Tarnogradskii  

 

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Variety

elongatissimum

Prescott  

 

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Variety

elongatum

J.Roy  

 

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Variety

elongatum

(Rosa) Croasdale  

 

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Variety

elongatum

West & G.S.West  

 

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Variety

elongatum

Brébisson  

 

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Variety

elongatum

Brébisson  

 

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Variety

elongatum

West & G.S.West  

 

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Variety

elongatum

(Krieger)A.M.Scott & Prescott  

 

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Forma

elongatum

Compère  

 

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Variety

elongatum

West & G.S.West  

 

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Forma

elongatum

(West & G.S.West) Kossinskaja  

 

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Forma

elongatum

Willi Krieger  

 

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Variety

erectum

Grönblad  

 

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Forma

erectum

Prescott  

 

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Variety

erectum

Klebs  

 

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Species

eriense

Taft  

 

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Variety

eriense

Thérézien  

 

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Species

evesiculatum

P.W.Cook  

 

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Species

exiguum

West & G.S.West  

 

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Variety

exile

Kol  

 

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Species

exile

West & G.S.West  

 

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Variety

extensum

Prescott  

 

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Variety

fallax

Ruzicka  

 

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Species

flaccidum

Delponte  

 

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Species

forte

E.A.Flint & D.B.Williamson  

 

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Species

fulvum

I.F.Lewis, C.Zirkle & R.Patrick  

 

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Species

fusiforme

F.Gay  

 

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Variety

gibbum

(Borge) Petlovany  

 

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Variety

giganteum

(Kurt Förster) Kurt Förster  

 

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Forma

glabra

Gutwinski  

 

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Variety

glabrum

West & G.S.West  

 

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Variety

glabrum

Gutwinski  

 

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Variety

glabrum

O.F.Borge  

 

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Species

gracile

Brébisson ex Ralfs  

 

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Forma

gracile

Messikommer  

 

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Variety

gracile

Claassen  

 

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Variety

gracile

Irénée-Marie  

 

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Variety

gracile

Krieger  

 

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Forma

gracile

Nygaard  

 

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Variety

gracile

Kossinskaja  

 

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Variety

gracilius

Croasdale  

 

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Variety

gracilius

(Maskell) Willi Krieger  

 

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Forma

grande

Prescott  

 

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Forma

grande

Prescott  

 

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Forma

grande

Prescott  

 

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Species

groenbladii

Cook  

 

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Species

guyanense

(Bourrelly & Couté) Coesel  

 

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Species

hibernicum

(West) A.J.Brook & D.M.Williamson  

 

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Variety

hibernicum

West & G.S.West  

 

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Species

hirudo

Delponte  

 

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Species

hunanense

C.-C.Jao  

 

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Species

hutchinsonii

M.F.Rich  

 

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Forma

hyalina

Raciborski  

 

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Variety

hybridum

Rabenhorst  

 

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Variety

hybridum

Rabenhorst  

 

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Species

idiosporum

West & G.S.West  

 

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Variety

immane

Wolle  

 

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Forma

incurvum

Petkoff  

 

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Variety

incurvum

Claassen  

 

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Species

incurvum

Brébisson  

 

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Variety

indicum

J.P.Keshri & D.Das  

 

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Forma

indicum

J.P.Keshri & D.Das  

 

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Variety

inflatum

M.I.Claassen  

 

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Forma

infractum

W.Vyverman  

 

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Species

insolitum

Claassen  

 

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Variety

intermedium

Claassen  

 

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Variety

intermedium

T.Hinode  

 

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Variety

intermedium

Skvortzov  

 

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Variety

intermedium

Grönblad  

 

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Variety

intermedium

(J.Roy & Bisset) Ruzicka  

 

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Species

intermedium

Ralfs  

 

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Variety

intermedium

Gutwinski  

 

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Variety

interruptum

(West & G.S.West) Donat  

 

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Forma

irenee-mariei

Prescott  

 

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Variety

irregulare

Schaarschmidt  

 

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Variety

japonicum

(Suringar) Willi Krieger  

 

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Variety

javanicum

Gutwinski  

 

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Variety

jenneri

Claassen  

 

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Variety

jenneri

Croasdale  

 

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Forma

jenneri

Skvortzov  

 

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Species

jenneri

Ralfs  

 

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Species

johnsonii

West & G.S.West  

 

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Species

juncidum

Ralfs  

 

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Species

karnakense

Coesel  

 

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Species

khasianum

W.B.Turner  

 

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Species

knysnanum

Huber-Pestalozzi  

 

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Variety

kolhapurense

N.D.Kamat  

 

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Species

kolhapurense

N.D.Kamat  

 

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Species

kranskopense

Claassen  

 

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Variety

kriegeri

Unknown authority  

 

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Variety

kuetzingii

(Kurt Förster) Kurt Förster  

 

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Variety

kuetzingii

Claassen  

 

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Forma

kuetzingii

A.I.Lobik  

 

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Species

kuetzingii

Brébisson  

 

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Variety

Kützingii

Nordst.  

 

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Species

Kützingii

Bréb.  

 

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Forma

laeve

Irénée-Marie  

 

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Variety

laevigatum

Brébisson  

 

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Variety

lagoense

West & G.S.West  

 

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Variety

lagoense

Gutwinski  

 

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Species

lagoense

Nordstedt  

 

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Species

lanceolatum

Kützing ex Ralfs  

 

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Variety

lanceolatum

P.Bourrelly & A.Couté  

 

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Forma

lanceolatum

Hortobágyi  

 

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Forma

laterale

A.K.M.N.Islam & Akter  

 

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Species

laterale

Nordstedt  

 

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Variety

laticeps

Grönblad  

 

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Variety

laticeps

Grönblad  

 

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Variety

latius

Grönblad  

 

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Forma

latius

Irénée-Marie  

 

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Forma

latum

Irénée-Marie  

 

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Species

leibleinii

Kützing ex Ralfs  

 

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Forma

leibleinii

W.B.Turner  

 

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Forma

leibleinii

W.B.Turner  

 

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Forma

leibleinii

M.Lewin  

 

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Variety

libellula

M.O.P.Iyengar & B.Vimala Bai  

 

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Variety

libellula

Tarnavschi & Radulescu  

 

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Species

limneticum

Lemmermann  

 

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Variety

linea

(Perty) West & G.S.West  

 

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Variety

lineatum

Huber-Pestalozzi  

 

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Forma

lineatum

(Woronichin) Kossinskaja  

 

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Forma

lineatum

West & G.S.West  

 

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Species

lineatum

Ehrenberg ex Ralfs  

 

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Species

littorale

F.Gay  

 

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Forma

littorale

O.Borge  

 

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Species

loktakense

Brühl & Biswas  

 

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Species

londaensis

Bharati & Gonzalves  

 

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Variety

longirostratum

Eggert  

 

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Forma

longissimum

Prescott  

 

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Forma

longius

Poljansky  

 

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Variety

lundellii

(Lagerheim) E.K.Kossinskaja  

 

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Variety

lunula

Beck-Mannagetta  

 

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Variety

lunula

(C.Bernard) Playfair  

 

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Species

lunula

Ehrenberg & Hemprich ex Ralfs  

 

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Species

macilentum

Brébisson  

 

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Variety

macilentum

Bourrelly  

 

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Variety

macilentum

Elenkin & Lobik  

 

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Species

magnificum

Playfair  

 

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Forma

magnum

Prescott  

 

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Species

maharastrense

N.D.Kamat  

 

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Variety

maior

Péterfi, Robert, Nagy-Tóth  

 

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Forma

maior

K.P.Biswas  

 

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Variety

maius

(Huber-Pestalozzi) Willi Krieger  

 

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Variety

maius

(West & G.S.West) Willi Krieger  

 

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Forma

maius

Croasdale  

 

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Forma

maius

Prescott  

 

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Variety

maius

(Schmidle) Willi Krieger  

 

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Variety

majus

Irénée-Marie  

 

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Variety

majus

Wittrock  

 

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Variety

majus

Brébisson  

 

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Variety

majus

Raciborski  

 

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Variety

majus

(J.Traunsteiner & M.Traunsteiner) Ruzicka  

 

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Forma

majus

Wille  

 

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Variety

malinvernianiforme

E.O.Hughes  

 

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Species

malinvernianiforme

Grönblad  

 

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Forma

malinvernianum

F.E.Fritsch  

 

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Species

malinvernianum

De Notaris  

 

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Variety

malinvernianum

(De Notaris) Coesel  

 

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Species

malmei

O.Borge  

 

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Species

mamenchoanum

J.P.Keshri & D.Das  

 

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Species

manipurense

Brühl & Biswas  

 

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Species

manschuricum

Skvortzov  

 

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Variety

massartii

(De Wildeman) Willi Krieger  

 

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Forma

maxima

Nordstedt  

 

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Variety

maximum

O.Borge  

 

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Forma

maximum

Prescott  

 

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Forma

maximum

Uherkovich  

 

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Species

medioleve

W.Archer  

 

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Species

methueni

F.E.Fritsch  

 

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Variety

michailovshoense

Elenkin  

 

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Variety

minimum

Schmidle  

 

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Forma

minor

Raciborski  

 

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Forma

minor

Nägeli  

 

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Forma

minus

Strøm  

 

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Forma

minus

Compère  

 

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Variety

minus

Hantzsch  

 

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Variety

minus

Irénée-Marie  

 

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Variety

minus

Hieronymus  

 

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Forma

minus

West & G.S.West  

 

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Forma

minus

Y.V.Roll  

 

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Forma

minus

G.Beck & Lerchenau  

 

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Species

minutum

Y.V.Roll  

 

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Variety

minutum

J.P.Keshri & D.Das  

 

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Species

minutum

Y.V.Roll  

 

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Variety

minutum

Kanetsuna  

 

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Forma

minutum

J.P.Keshri & D.Das  

 

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Species

modesta

Kant & P.Gupta  

 

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Species

molle

Playfair  

 

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Species

moniliferum

Ehrenberg ex Ralfs  

 

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Forma

moniliferum

Petkoff  

 

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Variety

moniliferum

Claassen  

 

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Variety

moniliferum

Borge  

 

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Variety

moniliferum

M.F.Rich  

 

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Variety

moniliferum

Grönblad  

 

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Species

monotaenium

W.Archer  

 

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Variety

mourense

Playfair  

 

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Variety

multipyrenoidum

P.Bourrelly & Couté  

 

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Forma

multistriatum

Prescott  

 

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Variety

nasutum

Kanetsuna  

 

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Forma

nasutum

A.M.Scott & Prescott  

 

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Variety

nasutum

Péterfi  

 

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Species

nasutum

Nordstedt ex Wolle  

 

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Forma

nasutum

A.M.Scott & Prescott  

 

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Species

navicula

(Brébisson) Lütkemüller  

 

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Species

nematodes

Joshua  

 

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Variety

nematodes

M.Hirano  

 

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Forma

nematodes

Irénée-Marie  

 

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Variety

nematodes

C.-C.Jao  

 

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Species

nilssonii

M.Lewin  

 

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Species

nordstedtii

Chodat  

 

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Variety

novae-angliae

(J.A.Cushman) W.Krieger  

 

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Species

nylandicum

(Grönblad) A.J.Brook & D.B.Williamson  

 

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Species

obtusangulum

A.K.J.Corda  

 

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Variety

obtusum

Croasdale  

 

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Variety

occidentale

West  

 

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Species

okaritoense

E.A.Flint & D.B.Williamson  

 

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Species

okavangicum

Coesel & Van Geest  

 

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Forma

oligocampylum

J.Roubal  

 

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Variety

oligopunctatum

Y.V.Roll  

 

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Species

oncosporum

Nordstedt  

 

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Species

pakistanicum

Masud-ul-Hassan, T.Rasool & M.Nizamuddin  

 

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Variety

palustre

Playfair  

 

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Species

paradoxum

Wille  

 

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Variety

parvulum

T.Hinode  

 

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Forma

parvulum

Irénée-Marie  

 

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Variety

parvulum

Claassen  

 

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Species

parvulum

Nägeli  

 

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Variety

parvum

West & G.S.West  

 

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Species

pegleri

F.E.Fritsch  

 

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Forma

peracerosum

Woronichin  

 

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Variety

peracerosum

F.E.Fritsch & M.F.Rich  

 

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Species

peracerosum

F.Gay  

 

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Forma

percrassum

Grönblad  

 

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Species

planum

E.O.Hughes  

 

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Species

pleurodermatum

West & G.S.West  

 

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Variety

podolicum

Gutwinski  

 

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Variety

polystichum

Whelden  

 

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Variety

polystichum

(Nygaard) Ruzicka  

 

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Variety

polystictum

Nygaard  

 

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Variety

polystictum

Behre  

 

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Species

polystictum

Nygaard  

 

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Species

porrectum

Nordstedt  

 

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Forma

portianum

Kenetsuna  

 

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Species

praegrande

Rabenhorst  

 

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Variety

praelongum

P.Bourrelly & A.Couté  

 

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Forma

praelongum

West  

 

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Species

praelongum

Brébisson  

 

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Species

pritchardianum

W.Archer  

 

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Forma

pritchardianum

F.E.Fritsch  

 

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Forma

pritchardianum

A.K.M.N.Islam & Akter  

 

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Variety

pritchardianum

West  

 

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Variety

proboscideum

W.B.Turner  

 

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Variety

procerum

Skuja  

 

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Species

prolongum

M.F.Rich  

 

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Species

pronum

Brébisson  

 

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Species

pseudocostatum

J.Stastný & F.A.C.Kouwets  

 

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Variety

pseudocynthia

Ruzicka  

 

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Species

pseudocynthia

J.P.Keshri & D.Das  

 

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Variety

pseudodianae

Kant & P.Gupta  

 

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Variety

pseudodianae

(J.Roy) Willi Krieger  

 

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Species

pseudoincurvum

J.P.Keshri & D.Das  

 

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Species

pseudokuetzingii

D.B.Williamson  

 

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Species

pseudoleibleinii

M.I.Claassen  

 

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Variety

pseudoleibleinii

Kurt Förster & Eckert  

 

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Forma

pseudolibellula

F.E.Fritsch  

 

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Species

pseudolunula

O.Borge  

 

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Species

pseudonasutum

C.-C.Jao  

 

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Species

pseudopusillum

Messikommer  

 

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Species

pseudopygmaeum

Kouwets  

 

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Variety

pterosporum

Bourrelly  

 

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Species

pulchellum

West & G.S.West  

 

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Forma

punctatum

Prescott & A.M.Scott  

 

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Variety

punctatum

W.Krieger  

 

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Species

pusillum

Hantzsch  

 

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Species

pygmaeum

Gutwinski  

 

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Variety

pyrenoidosum

Péterfi  

 

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Species

quadrangulare

A.K.J.Corda  

 

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Variety

ralfsii

Claassen  

 

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Variety

ralfsii

Claassen  

 

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Variety

ralfsii

M.I.Claassen  

 

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Forma

ralfsii

K.Rosa  

 

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Variety

ralfsii

Claassen  

 

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Variety

ralfsii

E.O.Hughes  

 

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Forma

ralfsii

Irénée-Marie  

 

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Forma

ralfsii

Irénée-Marie  

 

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Forma

ralfsii

Irénée-Marie  

 

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Species

ralfsii

Brébisson ex Ralfs  

 

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Species

ranunculi

I.F.Lewis, C.Zirkle & R.Patrick  

 

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Forma

rectimarginatum

J.P.Keshri & D.Das  

 

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Variety

rectimarginatum

N.D.Kamat  

 

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Variety

rectimarginatum

B.N.Prasad & P.K.Misra  

 

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Species

rectimarginatum

A.M.Scott & Prescott  

 

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Variety

rectius

(Norstedt) De Toni  

 

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Variety

rectum

Playfair  

 

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Forma

rectum

A.M.Scott & Prescott  

 

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Forma

rectum

Prescott  

 

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Forma

rectum

Irénée-Marie  

 

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Variety

rectum

(West) Willi Krieger  

 

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Variety

recurvatum

(Roll) Krieger  

 

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Variety

recurvatum

(Roll) Willi Krieger  

 

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Species

recurvum

Prescott  

 

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Forma

regulare

Kurt Förster  

 

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Species

regulare

Brébisson  

 

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Species

reticulatum

J.P.Keshri & D.Das  

 

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Variety

retusum

Péterfi  

 

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Variety

robustius

Chodat  

 

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Variety

robustum

G.S.West  

 

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Variety

rollianum

Kossinskaja ex Petlovany  

 

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Variety

rostratum

Vodenicharov & Kabasanova  

 

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Variety

rostratum

J.P.Keshri & D.Das  

 

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Forma

rostratum

Irénée-Marie  

 

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Variety

rostratum

Y.V.Roll  

 

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Species

rostratum

Ehrenberg ex Ralfs  

 

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Species

schweickerdtii

Claassen  

 

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Species

scoticum

W.B.Turner  

 

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Variety

scottii

Prescott  

 

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Variety

sculptum

(Raciborski) Ruzicka  

 

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Species

selenaeum

Maskell  

 

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Species

selenastroides

Roll  

 

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Variety

semicirculare

O.Borge  

 

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Species

semicirculare

Willi Krieger & A.M.Scott  

 

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Species

setaceum

Ehrenberg ex Ralfs  

 

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Variety

setaceum

Willi Krieger  

 

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Forma

setaceum

Irénée-Marie  

 

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Forma

setaceum

Irénée-Marie  

 

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Forma

setaceum

Irénée-Marie  

 

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Forma

sigmoideum

Woronichin  

 

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Forma

sigmoideum

Irénée-Marie  

 

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Forma

sigmoideum

Irénée-Marie  

 

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Variety

sikkimense

J.P.Keshri & D.Das  

 

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Variety

sikkimense

J.P.Keshri & D.Das  

 

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Species

sikkimicum

J.P.Keshri & D.Das  

 

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Forma

sikkimicum

J.P.Keshri & D.Das  

 

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Variety

silesiacum

Grönblad  

 

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Species

siliqua

West & G.S.West  

 

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Variety

simplissimum

Prescott  

 

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Species

sinense

Lütkemüller  

 

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Species

sinuosum

D.B.Williamson  

 

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Species

soroksariense

M.Halász  

 

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Variety

spetsbergense

Claassen  

 

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Variety

spetsbergense

(Borge) Petlovany  

 

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Species

sphaerosporum

(G.S.West) A.J.Brook  

 

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Variety

sphaerosporum

G.S.West  

 

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Variety

spinosporum

W.Hodgetts  

 

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Species

spinosporum

W.Hodgetts  

 

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Species

spiraliforme

Schroeder  

 

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Variety

spirostriolatum

Irénée-Marie  

 

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Forma

striatum

Prescott  

 

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Species

strigosum

Brébisson  

 

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Variety

striolatum

Claassen  

 

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Variety

striolatum

Claassen  

 

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Variety

striolatum

M.Hirano  

 

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Forma

striolatum

Irénée-Marie  

 

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Forma

striolatum

Kurt Förster & Eckert  

 

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Species

striolatum

Ehrenberg ex Ralfs  

 

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Variety

striolatum-punctatum

Elenkin  

 

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Species

subbiclavatum

Lacoste de Díaz  

 

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Species

subcostatum

Nordstedt  

 

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Variety

subcostatum

(Nordstedt) Willi Krieger  

 

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Species

subcrassum

W.B.Turner  

 

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Species

subdecorum

M.I.Claassen  

 

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Species

subfusiforme

Messikommer  

 

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Species

subjuncidiforme

Grönblad  

 

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Variety

subjuncidiforme

Messikommer ex Ruzicka  

 

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Species

sublagoense

M.I.Claassen  

 

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Species

sublanceolatum

Woronichin  

 

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Species

sublaterale

Ruzicka  

 

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Species

sublatifrons

G.S.West  

 

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Variety

submoniliferum

G.A.Klebs  

 

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Variety

submoniliferum

(Woronchin) Willi Krieger  

 

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Variety

subpunctatum

Croasdale  

 

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Species

subrostratum

Willi Krieger  

 

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Variety

subscoticiforme

(Grönblad) Willi Krieger  

 

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Species

subscoticum

Gutwinski  

 

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Variety

subscoticum

 

 

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Variety

subspetsbergense

(Woronichin) Kossinskaja  

 

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Variety

substriatum

(Grönblad) Willi Krieger  

 

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Variety

substrigosum

(Raciborski) Playfair  

 

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Species

subtile

Brébisson  

 

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Variety

subtruncatum

(West & G.S.West) Willi Krieger  

 

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Variety

subtumidum

Raciborski  

 

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Variety

subulatum

Willi Krieger  

 

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Forma

subulatum

Compère  

 

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Species

subulatum

(Kützing) Brébisson  

 

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Species

tacomense

Prescott  

 

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Variety

taylorii

D.CJackson  

 

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Forma

tenuior

Nordstedt  

 

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Variety

tenuissima

Brühl & Biswas  

 

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Species

tetractinium

F.Gay  

 

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Variety

thuretii

Brébisson  

 

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Species

tortitaenioides

Coesel  

 

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Species

tortum

B.M.Griffiths  

 

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Species

toxon

West  

 

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Species

trabeculoides

Corda  

 

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Species

trochiscosporum

West & G.S.West  

 

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Forma

truncatum

Nygaard  

 

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Species

truncatum

W.B.Turner  

 

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Species

tumidulum

F.Gay  

 

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Forma

tumidulum

J.P.Keshri & D.Das  

 

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Variety

tumidum

Claassen  

 

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Forma

tumidum

W.R.Taylor  

 

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Variety

tumidum

Bourrelly  

 

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Variety

tumidum

Nordstedt  

 

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Variety

tumidum

G.S.West  

 

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Variety

tumidum

O.Borge  

 

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Species

tumidum

L.N.Johnson  

 

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Species

turgidum

Ehrenberg ex Ralfs  

 

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Forma

turgidum

Nordstedt  

 

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Variety

typicum

G.A.Klebs  

 

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Variety

ulna

K.M.Strøm  

 

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Variety

upsaliense

Nordstedt  

 

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Species

validum

West & G.S.West  

 

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Variety

validum

West  

 

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Species

variabile

A.J.Brook  

 

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Variety

variabile

(Lemmermann) Willi Krieger  

 

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Forma

venus

Petkoff  

 

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Variety

venus

Petkoff  

 

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Forma

venus

K.M.Strøm  

 

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Variety

venus

Cholnoky  

 

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Forma

venus

R.Lenzenweger  

 

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Species

venus

Kützing ex Ralfs  

 

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Variety

verrucosum

(Y.V.Roll) Willi Krieger  

 

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Variety

vittatum

Nordstedt  

 

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Variety

vittatum

Grönblad  

 

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Species

wallichii

W.B.Turner  

 

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Variety

warmbadianum

Claassen  

 

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Species

warmbadianum

M.I.Claassen  

 

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Variety

westii

J.A.Cushman  

 

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Variety

westii

Willi Krieger  

 

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Species

wittrockianum

W.B.Turner  

 

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