Prasiolopsis Vischer, 1953

Holotype species: Prasiolopsis ramosa Vischer

Original publication and holotype designation: Vischer, W. (1953). Über primitivste Landpflanzen. Berichte der Schweizerischen Botanischen Gesellschaft 63: 169-193.

Description: Thalli comprising filamentous to parenchymatous masses to 1-2 mm. On germination spores produce a uniseriate filament that becomes parenchymatous and highly and irregularly branched. Cells cyclindrical to isodiametric to globular, terminal cells often elongate. Cells uninucleate with single, axial stellate chloroplast and prominent pyrenoid. Asexual reproduction by means of aplanospores; aplanosporangia formed from vegetative cells, often becoming enlarged when filled with spores. Spores cylindrical, 7-10 &m long. Flagellated stages and sexual reproduction unknown. Prasiolopsis known only from Europe, subaerial in humid conditions on rocks or trunks of trees; also found with Prasiola and Rosenvingiella in more exposed coastal conditions.

Information contributed by: D. Garbary. The most recent alteration to this page was made on 2012-07-11 by Michael Guiry.

Taxonomic status: This name is of an entity that is currently accepted taxonomically.

Most recent taxonomic treatment adopted: Sluiman, H.J., Guihal, C. & Mudimu, O. (2008). Assessing phylogenetic affinities and species delimitations in Klebsormidiales (Streptophyta): nuclear-encoded rDNA phylogenies and ITS secondary structure models in Klebsormidium, Hormidiella, and Entransia. Journal of Phycology 44(1): 183-195.

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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Some of the descriptions included in AlgaeBase were originally from the unpublished Encyclopedia of Algal Genera, organised in the 1990s by Dr Bruce Parker on behalf of the Phycological Society of America (PSA) and intended to be published in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.

Linking to this page: https://www.algaebase.org/search/genus/detail/?genus_id=42983

Citing AlgaeBase
Cite this record as:
Michael Guiry in Guiry, M.D. & Guiry, G.M. 11 July 2012. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. https://www.algaebase.org; searched on 23 April 2024