156,015 species and infraspecific names are in the database, 21,990 images, 60,299 bibliographic items, 442,465 distributional records.

Monomorphina Mereschkowsky, 1877

Empire Eukaryota
Kingdom Protozoa
Subkingdom Eozoa
Infrakingdom Infrakingdom Euglenozoa
Phylum Euglenozoa
Subphylum Euglenoida
Class Euglenophyceae
Subclass Euglenophycidae
Order Euglenales [=Euglenida]
Family Euglenaceae
Subfamily Euglenoideae

Holotype species: Monomorphina pyrum (Ehrenberg) Mereschkowsky

Original publication and holotype designation: Mereschkowsky, K.S. (1877). Etjudy nad prostejsimi zivotnymi severa Rossii. Trudy Sankt-Peterburgskago Obshchestva Estestvoisptatele 8: 1-299.

Taxonomic status: currently recognized as a distinct genus.

Most recent taxonomic treatment adopted: Cavalier-Smith, T. (2016). Higher classification and phylogeny of Euglenozoa. European Journal of Protistology 56: 250–276, 2 figs.

Description: Marin et al. (2003: 102) provide an emended diagnosis: Cells with a single emergent flagellum; pyriform in lateral view with hyaline spine at the posterior end; in apical view not or only slightly compressed; with rigid pellicle or with slight metaboly; pellicle strips helically arranged, typically with left-handed orientation, rarely right-handed; a subset of pellicle strips elevated with conspicuous hyaline keels, resembling a screw thread; one to few large, parietal chloroplasts, not lens-shaped; pyrenoids typically absent; two (rarely 3-4) conspicuous lateral paramylon plates; nuclear- encoded SSU rRNA molecule typically with U as the third nucleotide in the terminal loop of Helix 27. Emended by Kosmala & Zakrys in Kosmala et al., 2007: 177: Cells ovoid or slightly oblate (circular or widely elliptical in cross-section) and rigid; numerous spiral stripes or a few conspicuous hyaline keels of the pellicle extending to form a pronounced tail; one parietal, spherical chloroplast (usually more or less perforated); haplopyrenoids (one or more?) present on the inner side of the chloroplast; and two or three (rarely 4) conspicuous lateral paramylon plates located between the pellicle and the chloroplast. Emended diagnosis Marin & Melkonian (in Marin et al. 2003: 102).

The most recent alteration to this page was made on 30 Dec 2017 by M.D. Guiry.

Numbers of names and species: There are 33 species names in the database at present, as well as 5 infraspecific names. Of the species names, 17 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.

Kosmala, S., Milanowski, R., Brzoska, K., Pekala, M., Kwiatowski, J. & Zakrys, B. (2007). Phylogeny and systematics of the genus Monomorphina (Euglenaceae) based on morphological and molecular data. Journal of Phycology 43(1): 171-185.

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

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: 16 April 2003 by M.D. Guiry

Verified by: 30 December 2017 by M.D. Guiry

Linking to this page: http://www.algaebase.org/search/genus/detail/?genus_id=45850

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 20 August 2019.

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