Endochloridion Pascher, 1930
Lectotype species: Endochloridion simplex Pascher
Original publication: Pascher, A. (1930). Zur Kenntnis der heterokonten Algen. Archiv für Protistenkunde 69: 401-451.
Request PDFType designated in: Loeblich, A.R., III (1967). Nomenclatural notes in the Pyrrhophyta, Xanthophyta and Euglenophyta. Taxon 16(1): 68-69, no figs.
Description: Unicellular, solitary organisms, spherical to ellipsoidal, free. Juvenile stages sometimes slightly and temporarily sphero-tetrahedral. Cell wall often strongly silicified and with a very dense reticulate system of ornamentation, circular, concave structures referred to as scrobiculations. Chloroplasts yellow green, from one to 20 per cell, never parietal and always sunken in the cytoplasm; ellipsoidal to discoid, sometimes folded or twisted or even slightly lobed-stellate. When numerous chloroplasts regularly distributed; sometimes they are radiating. Storage products in the form of oil droplets and lipids of varying sizes, some of which are red colored. Small, ephemeral, refringent protein granules formed, but these disappear during autospore formation. Asexual reproduction by zoospores and autospores. Autospores formed in twos or fours. They have a smooth cell wall and are sometimes flattened longitudinally. Spore release in at least one species by opening of the two similar parts of the cell wall. Zoospores 8-12 _m long, 16-32 produced per mother cell, generally an imperfect ovoid, usually highly metabolic. Zoospores with two highly unequal flagella, the longest nearly twice as long as the cell, the other very short, one or two non parietal chloroplasts and a small stigma. Endochloridion known from freshwater ponds and bogs, often epiphytic in the mucilage of other algae or aquatic plants; reported only from central Europe. Species distinguished based on cell dimensions, the number and morphology of chloroplasts and the nature 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.
Gender: This genus name is currently treated as neuter.
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=46495
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 03 May 2024
