Chlorapion Bourrelly, 1959

Holotype species: Chlorapion grande (Düringer) Bourrelly

Original publication and holotype designation: Bourrelly, P. (1959). Chlorapion nov. nom. Österreichische Botanische Zeitschrift 106: 172 only.

Description: Unicellular epiphytic organisms, occurring singly or in masses. Cells up to 150 µm long and 90 µm wide, oval to pyriform or very irregular are voluminous with one extremity covered with mucilage encrusted with calcium carbonate which attaches the thallus to the substratum. Cell wall thick and non stratified. Nuclei numerous and located at the interior of a parietal envelope even in young cells. Chloroplast numerous, discoid to fusiform, irregularly dispersed in the cytoplasm. The central region of the cell occupied by a sphere of colorless material of unknown nature. Asexual reproduction by zoospores (up to 1024 spores formed). Zoospores 15 &m long and 4.5 &m wide, ellipsoidal to ovoid with two discoid chloroplasts, a stigma, two contractile vacuole and two unequal flagella. Similarly, aplanospores also produced. Chlorapion epiphytic on duckweed in freshwater; very rarely reported and only from central Europe.

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 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Some of the descriptions included in AlgaeBase were originally from the unpublished Encyclopedia of Algal Genera, organised in the 1990s by Dr Bruce Parker on behalf of the Phycological Society of America (PSA) and intended to be published in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=47324

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 27 April 2024