''Sirodotia'' Kylin (1912) is a genus of freshwater red alga which was described by
Kylin in 1912, and placed in the
Batrachospermaceae
Batrachospermaceae is a family of fresh water red algae
Red algae, or Rhodophyta (, ; ), are one of the oldest groups of eukaryotic algae. The Rhodophyta also comprises one of the largest phyla of algae, containing over 7,000 currently recog ...
family.
The genus name of ''Sirodotia'' is in honour of Simon Sirodot (1825–1903), who was a French
botanist,
algologist and teacher. He was also a
Zoologist
Zoology ()The pronunciation of zoology as is usually regarded as nonstandard, though it is not uncommon. is the branch of biology that studies the animal kingdom, including the structure, embryology, evolution, classification, habits, and ...
and
Archaeologist, who taught at schools in Toulouse, Strasbourg, Le Mans, Cahors and Limoges.
Taxonomy
The family Batrachospermaceae belongs to the order
Batrachospermales and has six well known genera namely ''
Batrachospermum'', ''
Kumanoa'', ''Sirodotia'', ''
Nothocladus'', ''
Tuomeya'', and ''
Sheathia''. The morphology of the
gametophyte
A gametophyte () is one of the two alternation of generations, alternating multicellular organism, multicellular phases in the life cycles of plants and algae. It is a haploid multicellular organism that develops from a haploid spore that has on ...
of ''Batrachospermum'', ''Sirodotia'', ''Tuomeya'', and ''Nothocladus'' are more are less similar to each other. Necchi and
Entwisle Entwisle is a surname. Notable people with the surname include:
*Gertrude Lilian Entwisle (1892–1961), British electrical engineer
* Edmund Entwisle (1660–1707), English clergyman
* Joseph Entwisle (1767–1841), English Methodist minister
* P ...
(1990) proposed to delimit them from generic level to section level of genus ''Batrachospermum''.
''Sheathia'' was the member of genus ''Batrachospermum'' and has risen to generic level.
phylogenetic
In biology, phylogenetics (; from Greek φυλή/ φῦλον [] "tribe, clan, race", and wikt:γενετικός, γενετικός [] "origin, source, birth") is the study of the evolutionary history and relationships among or within groups o ...
studies revealed a distinctive genus level of the above with full support in bootstrap analysis
[Vis, M.L., Saunders, G.W., Sheath, R.G., Dunse, K., Entwisle T.J. 1998. Phylogeny of the Batrachospermales (Rhodophyta) inferred from rbcL and 18S ribosomal DNA gene sequences. Journal of Phycology, 34: 341–350. ] (Vis et al., 1998) and ''Sirodotia'' has been raised to generic level.
Description
Attached, gelatinous
gametophytic
A gametophyte () is one of the two alternating multicellular phases in the life cycles of plants and algae. It is a haploid multicellular organism that develops from a haploid spore that has one set of chromosomes. The gametophyte is the sex ...
filaments, up to 17 cm long, with a beaded appearance varying from blue-green to yellow-green.