Enallax Pascher, 1943

Holotype species: Enallax alpinus Pascher

Currently accepted name for the type species: Enallax coelastroides (Bohlin) Skuja

Original publication and holotype designation: Pascher, A. (1943). Alpine Algen. I Neue Protococcalengattungen aus der Uralpen. Beihefte zum Botanischen Centralblatt 62: 175-196.

Description: Thalli colonial, forming mostly 2-, 4-, 8-celled coenobia, but single cells found specially in culture; coenobia not embedded in mucilage envelope. Cells in coenobium arranged uni- or biseriate, flat or convoluted. Cells broadly fusiform, ellipsoidal to cylindrical 11-32 x 3-16 µm. Cell walls with 3- 6 longitudinal ribs running from pole to pole. Cells uninucleate; one parietal chloroplast with single pyrenoid. Asexual reproduction by autospores; 2-8 per sporangium, usually organized into coenobia. Daughter coenobia released by longitudinal rupture of parental cell walls. Flagellated stages and sexual reproduction unknown.

Information contributed by: D.J. Garbary & E. Hegewald. The most recent alteration to this page was made on 2018-11-27 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 masculine.

Most recent taxonomic treatment adopted: Tsarenko, P.M. (2011). Sphaeropleales. In: Algae of Ukraine: diversity, nomenclature, taxonomy, ecology and geography. Volume 3: Chlorophyta. (Tsarenko, P.M., Wasser, S.P. & Nevo, E. Eds), pp. 280-355. Ruggell: A.R.A. Gantner Verlag K.-G..

Comments: Found on wet rocks and peat bogs or planktonic in freshwater; reported from Europe, Cuba, New Zealand and Kerguelen. Species are distinguished by cell arrangement. Single cells similar to Scotiellopsis. Hindák (1990) transferred Scenedesmus acutiformis to Enallax and lumped all other previously described species into one taxon.

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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Some of the descriptions included in AlgaeBase were originally from the unpublished Encyclopedia of Algal Genera, organised in the 1990s by Dr Bruce Parker on behalf of the Phycological Society of America (PSA) and intended to be published in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=45463

Citing AlgaeBase
Cite this record as:
M.D. Guiry in Guiry, M.D. & Guiry, G.M. 27 November 2018. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. https://www.algaebase.org; searched on 23 November 2024