Rhodostichus Geitler & Pascher, 1931

Holotype species: Rhodostichus expansus Geitler & Pascher

Original publication and holotype designation: Geitler, L. (1931). Cyanophyceae. In: Kryptogamen-Flora von Deutschland, Österreich und der Schweiz. Ed. 2. (Rabenhorst, L. Eds) Vol. 14, pp. 289-672. Leipzig: Akademische Verlagsgesellschaft.

Description: Pseudofilamentous - colonial; colonies form wide, macroscopic, encrusted layers, dark purple to reddish black, to 50 _m thick, composed of erect, parallel disposed rows of cells enveloped by fine, colorless gelatinous envelopes, only at bases distinctly limited, confluent by their sides. Cells rod-like, cylindrical, rounded at the ends, sometimes slightly curved, by their longer axis oriented to the surface of the colony (lying in the axis of the row of cells), or secondary perpendicular to it. Cells with pale pink content, in more layers reddish. The reddish color of the colony is caused by the color of cells, not mucilage. Ce1ls divide only crosswise, perpendicular to the longer axis, only in one place in consequent generations. Reproduction probably by solitary cells. Epilithic (on stones) in creeks with flowing water, usually in forests, in shaded places; type species described from the Austrian Alps and not yet revised. The second species (unclear) is known only from streams in mountain areas in England.

Information contributed by: J. Komárek. The most recent alteration to this page was made on 2023-03-02 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: Strunecký, O., Ivanova, A.P. & Mares, J. (2022 '2023'). An updated classification of cyanobacterial orders and families based on phylogenomic and polyphasic analysis (Review). Journal of Phycology 59(1): 12-51.

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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Some of the descriptions included in AlgaeBase were originally from the unpublished Encyclopedia of Algal Genera, organised in the 1990s by Dr Bruce Parker on behalf of the Phycological Society of America (PSA) and intended to be published in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=44870

Citing AlgaeBase
Cite this record as:
M.D. Guiry in Guiry, M.D. & Guiry, G.M. 02 March 2023. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. https://www.algaebase.org; searched on 29 March 2024

 
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