Chaetonema Nowakowski [Nowakovsky], 1876

Holotype species: Chaetonema irregulare Nowakowski

Original publication and holotype designation: Nowakowski, L. (1876). Beitrag zur Kenntniss der Chytridiaceen. Beiträge zur Biologie der Pflanzen 2(1): 73-96.

Description: Plants growing on and within mucilage envelope of other algae, consisting of irregularly branched, uniseriate filaments, some laterals perpendicular to main axis and others prolonged to form a terminal hair. Hairs often arise on short prolongation of cell. Cells uninucleate, cylindrical and elongated, each with parietal chloroplast encircling more than half of cell lumen and with 1 or 2 pyrenoids. Asexual reproduction by quadriflagellate zoospores; flagella of equal length. Sexual reproduction oogamous, with 8 biflagellate male gametes in each swollen gametangium and female gamete formed by swelling of a cell.

Information contributed by: D.M. John & M.D. Guiry. The most recent alteration to this page was made on 2022-11-30 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 neuter.

Most recent taxonomic treatment adopted: Burova, O.V., Tsarenko, P.M., Kovalenko, O.V., Petlovany, O.A., Mikhailyuk, T.I. & Lilitska, G.G. (2011). Chaetophorales. In: Algae of Ukraine: diversity, nomenclature, taxonomy, ecology and geography. Volume 3: Chlorophyta. (Tsarenko, P.M., Wasser, S.P. & Nevo, E. Eds), pp. 264-278. Ruggell: A.R.A. Gantner Verlag K.-G.

Comments: Reported from Europe and North America. It has been suggested that Chaetonema ornatum should be transferred to the doubtful genus Chaetonemopsis. Chaetonema is generally found on or within mucilage of various freshwater algae including Batrachospermum, Chaetophora and Tetraspora.

Verification of Data
Users are responsible for verifying the accuracy of information before use, as noted on the website Content page.

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Some of the descriptions included in AlgaeBase were originally from the unpublished Encyclopedia of Algal Genera, organised in the 1990s by Dr Bruce Parker on behalf of the Phycological Society of America (PSA) and intended to be published in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=43356

Citing AlgaeBase
Cite this record as:
M.D. Guiry in Guiry, M.D. & Guiry, G.M. 30 November 2022. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. https://www.algaebase.org; searched on 29 November 2024