Chlamydonephris H.Ettl & O.Ettl, 1959: 104
Classification:
Empire Eukaryota
Kingdom Plantae
Phylum Chlorophyta
Class Chlorophyceae
Order Chlamydomonadales
Family Chlamydomonadaceae
Holotype species: Chlamydonephris pomiformis (Pascher) H.Ettl & O.Ettl
Taxonomic status: currently recognized as a distinct genus.
Description: Cells moderately to strongly reniform with an apical invagination. Two isokont flagella inserted at the apex within the depression. No papilla have been observed. Chloroplast single and cup-shaped or numerous and discoidal. Cell wall present and described as varying from thin to thick. Pyrenoids and stigma absent or present depending on the species. Cells normally have two, apical contractile vacuoles. Asexual reproduction by zoosporogenesis resulting in two or four motile daughter cells. No other asexual stages have been reported. No sexual stages have been observed in this genus. Cells moderately to strongly reniform with an apical invagination. Two isokont flagella inserted at the apex within the depression. No papilla have been observed. Chloroplast single and cup-shaped or numerous and discoidal. Cell wall present and described as varying from thin to thick. Pyrenoids and stigma absent or present depending on the species. Cells normally have two, apical contractile vacuoles. Asexual reproduction by zoosporogenesis resulting in two or four motile daughter cells. No other asexual stages have been reported. No sexual stages have been observed in this genus.
Comments: The genus Chlamydonephris contains both freshwater and marine representatives. The freshwater representatives, which have been described in more detail, have been found in meltwater and small pools in continental Europe. Ettl describes Chlamydonephris as a parallel of the quadriflagellate genus Pyramichlamys. No ultrastructural, biochemical, or molecular data are available for this organism
Numbers of names and species: There are 7 species (and infraspecific) names in the database at present, of which 6 have been flagged as currently accepted taxonomically.
Names: ('C' indicates a name that is currently accepted taxonomically; 'S' a homotypic or heterotypic synonym; 'U' indicates a name of uncertain taxonomic status, but which has been subjected to some verification nomenclaturally; 'P' indicates a preliminary AlgaeBase entry that has not been subjected to any kind of verification. For more information on a species click on it to activate a link to the Species database):
Chlamydonephris adriatica (J.Schiller) H.Ettl & O.Ettl C
Chlamydonephris cor (J.Schiller) H.Ettl & O.Ettl C
Chlamydonephris discifera (Pascher) H.Ettl & O.Ettl P
Chlamydonephris excavata (W.Conrad) H.Ettl & O.Ettl C
Chlamydonephris impressa (Pascher) H.Ettl & O.Ettl C
Chlamydonephris nana (J.Schiller) H.Ettl & O.Ettl C
Chlamydonephris pomiformis (Pascher) H.Ettl & O.Ettl C - type
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: http://www.algaebase.org/search/genus/detail/?genus_id=45050
Citing AlgaeBase
Cite this record as:
Guiry, M.D. & Guiry, G.M. 2013. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. http://www.algaebase.org; searched on 18 May 2013.
Algaebase taxon LSID: urn:lsid:algaebase.org:taxname:86989
