Sklerochlamys Pascher, 1938

Holotype species: Sklerochlamys fragilis Pascher

Original publication and holotype designation: Pascher, A. (1938). Heterokonten. In: Kryptogamen-Flora von Deutschland, Österreich und der Schweiz. (Rabenhorst, L. Eds) Vol. 11, Teil 3, pp. 321-480. Leipzig: Akademische Verlagsgesellschaft.

Description: Unicellular, solitary, free-living, non-motile organisms 10-15 (-22) &m diameter. Cells spherical with a particularly firm and quite thick cell wall that is meanwhile for the most part non stratified. The cell wall is often red and shows in optical section a unique structure with very fine radiating striations. In surface view cells conspicuously punctate. No polarity is evident in the cell as a whole, and the punctae may correspond to mucilage pores, sometimes the cell being effectually sourrounded by a mucilage envelope. One or many parietal, cup-shaped but also ring-shaped or discoid chloroplasts per cell; pyrenoids absent. Frequently numerous, red oil globules present. Asexual reproduction by autospores and zoospores. Autospores formed in twos or fours in each mother cell at the interior of which the cells have already developed their characteristic cell walls. Spores released by a tearing of the maternal envelope into two, more or less identical pieces which persist for some time where they contact the autospores. Zoospores also formed in twos or fours, with two unequal flagella the smallest of which is very short and is non functional. Zoospores with single, parietal, lamillate chloroplast, without stigma. Sklerochlamys from soil, possibly of tropical origin; known only from central Europe. Species distinguished based on the number and dimension of chloroplasts and on characteristics of the cell wall.

Information contributed by: A. Couté. The most recent alteration to this page was made on 2021-10-05 by M.D. Guiry.

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

Most recent taxonomic treatment adopted: Kawai, H. & Nakayama, T. (2015). Introduction (Heterokontobionta p.p.), Cryptophyta, Dinophyta, Haptophyta, Heterokontophyta (except Coscinodiscophyceae, Mediophyceae, Fragilariophyceae, Bacillariophyceae, Phaeophyceae, Eustigmatophyceae), Chlorarachniophyta, Euglenophyta. In: Syllabus of plant families. Adolf Engler's Syllabus der Pflanzenfamilien. Ed. 13. Phototrophic eukaryotic Algae. Glaucocystophyta, Cryptophyta, Dinophyta/Dinozoa, Haptophyta, Heterokontophyta/Ochrophyta, Chlorarachnniophyta/Cercozoa, Chlorophyta, Streptophyta p.p. (Frey, W. Eds), pp. 11-64, 103-139. Stuttgart: Borntraeger Science Publishers.

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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=46501

Citing AlgaeBase
Cite this record as:
M.D. Guiry in Guiry, M.D. & Guiry, G.M. 05 October 2021. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. https://www.algaebase.org; searched on 04 May 2024