Cylindrocystis Meneghini ex De Bary, 1858
Holotype species: Cylindrocystis brebissonii (Ralfs) De Bary
Original publication and holotype designation: De Bary, A. (1858). Untersuchungen über die Familie der Conjugaten (Zygnemeen und Desmidieen) Ein Beitrag zur physiologischen und beschreibenden Botanik. pp. [i]-vi, 1-91. Leipzig: A. Förstnersche Buchhandlung (Arthur Felix).
Request PDFDescription: Cells usually solitary, but known to form short or long filaments or aggregations of cells in common gelatinous matrix. Cells small to medium sized (18-96 µm long, 1.5-4 times longer than broad), elliptic to elongate-cylindric, straight or curved, with broadly rounded ends. Chloroplasts two per cell, axial, stellate in end view, each with large, often elongate pyrenoid. Nucleus at middle between chloroplasts. Cell wall continuous around protoplast, ultrastructurally two layered. Asexual reproduction by transverse cell division. Sexual reproduction by homothallic or heterothallic conjugation. Zygote forms in broad conjugation tube; may extend into both gametangia. Mature zygospores usually spherical to rectangular, smooth-walled or with spines or small papillae. Mesospore layer of C. splendida with large pits. Mature zygospores usually usually required for identification. Cylindrocystis coosmopolitan, in subaerial, acidic aquatic or bog habitats. C. brebissonii and C. crassa widely distributed.
Information contributed by: J.F. Gerrath. The most recent alteration to this page was made on 2022-09-26 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 feminine.
Most recent taxonomic treatment adopted: Hess, S., Williams, S.K., Busch, A., Irisarri, I., Delwiche, C.F., de Vries, S., Darienko, T., Roger, A.J., Archibald, J.M., Buschmann, H., von Schwartzenberg, K. & de Vries, J. (2022). A phylogenomically informed five-order system for the closest relatives of land plants. Current Biology 32: 1-10.
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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Some of the descriptions included in AlgaeBase were originally from the unpublished Encyclopedia of Algal Genera,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=43553
Citing AlgaeBase
Cite this record as:
M.D. Guiry in Guiry, M.D. & Guiry, G.M. 26 September 2022. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. https://www.algaebase.org; searched on 27 November 2024
