Phaeaster Scherffel, 1927

Holotype species: Phaeaster pascheri Scherffel

Original publication and holotype designation: Scherffel, A. (1927). Beitrag sur Kenntnis der Chrysomonadineen. II. Archiv für Protistenkunde 57: 331-361.

Description: Cells globular, united by jelly in small colonies. The biflagellate swarmers oblique in shape, with the flagella emergent from a distinct pit on the side of the cell. The long flagellum is in its lower part swollen or extended into a bilateral wing, the bulbous short flagellum is in a pocket in close contact with the stigma which is placed in a process from the chloroplast. The flagellar root system is highly specialized. Flagellar pit is most often surrounded by a system of about 18-24 rhizopodia, which are not supported by microtubules. One stellate chloroplast (without girdle lamella) with a central pyrenoid, one dictyosome, and one ring-shaped mitochondrion. The cell surface overlying the chloroplast is covered by thin elliptical scales. Multiplication by longitudinal division and by swarmers. Stomatocysts of varying shape, smooth or with varying ornamentation of irregular ridges and tubercles. Found in ponds, lakes and streams in Europe and North America.

Information contributed by: J. Kristiansen. The most recent alteration to this page was made on 2016-08-23 by M.D. Guiry.

Taxonomic status: This name is of an entity that is currently accepted taxonomically.

Most recent taxonomic treatment adopted: Kristiansen, J. & Preisig, H.R. (2001). Encyclopedia of Chrysophyte genera. Bibliotheca Phycologica 110: 1-260.

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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Some of the descriptions included in AlgaeBase were originally from the unpublished Encyclopedia of Algal Genera, organised in the 1990s by Dr Bruce Parker on behalf of the Phycological Society of America (PSA) and intended to be published in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=44162

Citing AlgaeBase
Cite this record as:
M.D. Guiry in Guiry, M.D. & Guiry, G.M. 23 August 2016. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. https://www.algaebase.org; searched on 28 March 2023

 
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