Botryochloris Pascher, 1930
Holotype species: Botryochloris cumulata Pascher
Original publication and holotype designation: Pascher, A. (1930). Zur Kenntnis der heterokonten Algen. Archiv für Protistenkunde 69: 401-451.
Request PDFDescription: Colonial organisms comprised of irregular aggregates of cells (up to 100 or more cells). Cells joined by their cell walls; mucilage absent. Cells 3-14 (30) _m diameter, spherical, ovoid or ellipsoidal, with a delicate but easily distinguished cell wall without ornamentation. Chloroplasts parietal, from one to eight, discoid to cup shaped, sometimes lobed, yellow green. Pyrenoids absent. Food reserves in the form of oil droplets, lipids or refringent substances. Asexual reproduction by zoospores. Zoospores formed in twos or fours per mother cell, more or less cylindrical with two generally unequal flagella, one or two chloroplasts and with or without stigma. Zoospores can become amoeboid. Autospores sometimes produced, also in twos or fours, with one chloroplast. Botryochloris known from freshwater marshes and from soil; reported from central Europe. Species distinguished based on cell dimensions and number of chloroplasts per cell. Botryochloris resembles the tribophycean Sphaerosorus, from which it differs based on the spherical form of the colony and the number of 2-32 cells in the colony in the latter genus. Bourrelly combined these genera under the name Botryochloris. Botryochloris is also similar to Botryochloropsis (Eustigmatophyceae) which has the same morphology and methods of asexual reproduction. These genera differ, however, based on zoospore structure and pigment composition.
Information contributed by: H. R. Preisig. The most recent alteration to this page was made on 2021-10-04 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: 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.
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Citing AlgaeBase
Cite this record as:
M.D. Guiry in Guiry, M.D. & Guiry, G.M. 04 October 2021. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. https://www.algaebase.org; searched on 29 April 2024
