Closterium setaceum
| Closterium setaceum | |
|---|---|
Scientific classification  | |
| Kingdom: | Plantae |
| Division: | Charophyta |
| Class: | Zygnematophyceae |
| Order: | Desmidiales |
| Family: | Closteriaceae |
| Genus: | Closterium |
| Species: | C. setaceum |
| Binomial name | |
| Closterium setaceum Ehrenberg ex Ralfs 1848[1] | |
| Subspecies | |
| |
| Synonyms | |
| |
Closterium setaceum is a species of unicellular charophyte green algae in the family Closteriaceae. It has a cosmopolitan distribution, and is typically found in oligotrophic to mesotrophic waters, with a pH of 4.5 to 6.[2]
Closterium setaceum consists of very narrow cells about (150–)220–450(–610) μm long and (6–)8–13(–16) μm wide. The central portion of the cell is fusiform, with the dorsal and ventral sides of the central region of the cell being equally curved. The apices are drawn out into long, slender tips which are curved at the end with rounded or rounded-truncate tips. Each chloroplast contains two or three pyrenoids. The cell wall is colorless or brownish and is faintly striate with a density of 7 to 13 striae per 10 μm, or appears smooth. Zygospores are rectangular with concave sides.[3]
Closterium setaceum is similar to Closterium kuetzingii and Closterium rostratum. In contrast to those species, however, the colorless ends of C. setaceum are generally longer than the central green midregion of the cell.[4] In addition, the cells of C. setaceum are mostly narrower than 15 μm.[3]
References
[edit]- ↑ The British Desmidieae. Ralfs, J. (1848). page 176, pl. 30, fig. 4, London: Reeve, Benham & Reeve
- ↑ Růžička, J. (1977). Die Desmidiaceen Mitteleuropas. Band 1. 1. Lieferung. Stuttgart: E. Schweizerbart'sche Verlagsbuchhandlung. pp. vi, 292.
- 1 2 Coesel, Peter; Meesters, Koos (2007). Desmids of the Lowlands – Mesotaeniaceae and Desmidiaceae of the European Lowlands. Zeist, the Netherlands: KNNV Publishing. ISBN 978-90-5011-265-9.
- ↑ "Closterium setaceum - Desmid of the month". desmids.nl. 2006. Retrieved 2026-04-02.
External links
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