Pleurochloridella Pascher, 1937

Holotype species: Pleurochloridella vacuolata Pascher

Original publication and holotype designation: Pascher, A. (1937). Heterokonten. In: Kryptogamen-Flora von Deutschland, Österreich und der Schweiz. (Rabenhorst, L. Eds) Vol. 11, Teil 2, pp. 161-320. Leipzig: Akademische Verlagsgesellschaft.

Description: Unicellular, free-living, non-motile organisms 10-14 (-40) _m diameter. Cells sometimes temporarily grouped inside the maternal cell wall after division. Cells globular to spherical, with a smooth, delicate but sometimes slightly thickened cell wall. Chloroplasts cup-shaped to discoid and parietal; mostly two per cell and rarely three or more with only one present in young cells after division. Pyrenoids absent. Bright red lipid droplets eventually forming. Asexual reproduction by zoospores and autospores. Zoospores ellipsoidal (sometimes completely amoeboid), formed in twos and rarely in fours in the mother cell with two unequal flagella (the largest as long as the body of the cell), a single parietal, lamellate chloroplast and a stigma. Autospores formed in twos, very rarely in fours, mostly with a single chloroplast and always with contractile vacuoles. These are hemiautospores. Cysts never observed. Pleurochloridiella in stagnant freshwater always associated with the mucilage of immersed parts of aquatic phanerogams (Phragmites communis Trin., Potamogeton lucens L., Typha angustifolia L.); known from central Europe. . botrydiopsis Pascher is noted by the author to belong possibly to another genus (Stigmatella). This species always has a stigma, a large number of chloroplasts and a thickened cell wall. Cell diameter is 15 to 20 _m and up to 40 _m when the numerous autospores are produced (up to 64).

Information contributed by: A. Couté & C. Cardinal-Legrand. The most recent alteration to this page was made on 2020-09-01 by M.D. Guiry.

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

Gender: This genus name is currently treated as feminine.

Most recent taxonomic treatment adopted: Ott, D.W. & Oldham-Ott, C.K. (2003). Eustigmatophyte, Raphidophyte, and Tribophyte. In: Freshwater Algae of North America, Ecology and Classification. (Wehr, J.D. & Sheath, R.G. Eds), pp. 423-470. San Diego: Academic Press.

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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Some of the descriptions included in AlgaeBase were originally from the unpublished Encyclopedia of Algal Genera, organised in the 1990s by Dr Bruce Parker on behalf of the Phycological Society of America (PSA) and intended to be published in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=44801

Citing AlgaeBase
Cite this record as:
M.D. Guiry in Guiry, M.D. & Guiry, G.M. 01 September 2020. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. https://www.algaebase.org; searched on 29 April 2024