155,552 species and infraspecific names are in the database, 21,916 images, 60,163 bibliographic items, 438,693 distributional records.

Polyopes J.Agardh, 1849

Classification:
Empire Eukaryota
Kingdom Plantae
Subkingdom Biliphyta
Phylum Rhodophyta
Subphylum Eurhodophytina
Class Florideophyceae
Subclass Rhodymeniophycidae
Order Halymeniales
Family Halymeniaceae

Lectotype species: Polyopes constrictus (Turner) J.Agardh

Original publication:Agardh, J.G. (1849). Algolosgiska bidrag. Öfversigt af Kongl. Vetenskaps-Adademiens Förhandlingar, Stockholm 6: 79-89.
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Type designated in Agardh, J.G. (1851). Species genera et ordines algarum, seu descriptiones succinctae specierum, generum et ordinum, quibus algarum regnum constituitur. Volumen secundum: algas florideas complectens. Part 1. pp. [i]-xii, [1]-336 + 337-351 [Addenda and Indices]. Lundae [Lund]: C.W.K. Gleerup.
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Taxonomic status: currently recognized as a distinct genus.

Most recent taxonomic treatment adopted: Kylin, H. (1956). Die Gattungen der Rhodophyceen. pp. i-xv, 1-673, 458 figs. Lund: C.W.K. Gleerups.

Nomenclatural notes
A change from Polyopes to Polyope (see Athanasiadis 2016: 646, note 14), if warranted, should be made by formally proposing conservation of the altered orthography. - (6 Mar 2017) - M.D. Guiry

Description: Subcylindrical to flat, of uniform width (relatively narrow), irregular constrictions sometimes present. Dichotomously to irregularly branched. Margins entire or with pinnate club-shaped or bifurcate branchlets. Medulla filamentous. Inner cortical cells and some medullary cells stellate. Other cortical cells isodiametric, elliptical to fusiform, progressively smaller toward cuticle. Ampullae with up to five orders of branches. Cells of carpogonial ampullae larger than those of auxiliary ampullae, which are more profusely branched. Carpogonial branch 2-celled, on primary ampullar filament. Auxiliary cell in separate ampulla, intercalary in primary or basal in secondary filament. A single, outwardly directed gonimoblast initial. Auxiliary fusion cell present. Carpostome absent. Pericarp of ampullar, inner cortical and medullary cells. Cystocarp compact, with many small carposporangia. Spermatangia undescribed. Tetrasporophyte isomorphic. Tetrasporangia cruciate, attached subbasally in intermediate cortical layer, in a nemathecium, which may or may not be elevated above surrounding cortex.

Information contributed by: S.C. Lindstrom & J.A. Lewis. The most recent alteration to this page was made on 6 Mar 2017 by M.D. Guiry.

Comments: Reported from Australia (incl. Tasmania), China, Japan, Hawaii, Sri Lanka, Kenya, and South Africa.

Numbers of names and species: There are 18 species names in the database at present, of which 11 have been flagged as accepted taxonomically on the basis of the listed literature under the species name. In some instances, opinions on taxonomic validity differ from author to author and users are encouraged to form their own opinion. AlgaeBase is a work in progress and should not be regarded as a definitive source only as a guide to the literature..

Names: ('C' indicates a name that is accepted taxonomically; 'S' a homotypic or heterotypic synonym; 'U' indicates a name of uncertain taxonomic status, but which has been subjected to some verification nomenclaturally; 'P' indicates a preliminary AlgaeBase entry that has not been subjected to any kind of verification. For more information on a species click on it to activate a link to the Species database):

Click here to also show infraspecific names in the list below.

Verification of data
Users are responsible for verifying the accuracy of information before use, as noted on the website Content page.

Contributors
Some of the descriptions included in AlgaeBase were originally from the unpublished Encyclopedia of Algal Genera, organised in the 1990s by Dr Bruce Parker on behalf of the Phycological Society of America (PSA) and intended to be published in CD format. These AlgaeBase descriptions are now being continually updated, and each current contributor is identified above. The PSA and AlgaeBase warmly acknowledge the generosity of all past and present contributors and particularly the work of Dr Parker.

Descriptions of chrysophyte genera were subsequently published in J. Kristiansen & H.R. Preisig (eds.). 2001. Encyclopedia of Chrysophyte Genera. Bibliotheca Phycologica 110: 1-260.

Created: 28 December 2000 by M.D. Guiry

Verified by: 06 March 2017 by M.D. Guiry

Linking to this page: http://www.algaebase.org/search/genus/detail/?genus_id=34414

Citing AlgaeBase
Please cite this record as:
M.D. Guiry in Guiry, M.D. & Guiry, G.M. 2019. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. http://www.algaebase.org; searched on 19 June 2019.

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