''Nemalion'' is a genus of
red algae
Red algae, or Rhodophyta (, ; ), make up one of the oldest groups of eukaryotic algae. The Rhodophyta comprises one of the largest Phylum, phyla of algae, containing over 7,000 recognized species within over 900 Genus, genera amidst ongoing taxon ...
that contains approximately ten species, including ''N. helminthoides''.
Its members are known by a number of common names.
[Recorded common names are threadweed, umisomen, tsukomo nori, crop of threads, sea noodles, tsukomo-nori, umisÔmen and umi-somen.] It is the source of the subclass name "Nemaliophycidae".
Species
As of 2017, the species accepted taxonomically are:
*''
Nemalion amoenum''
*''
Nemalion attenuatum''
*''
Nemalion cari-cariense''
*''
Nemalion helminthoides''
*''
Nemalion longicolle''
*''
Nemalion lubricum'' (
type species
In International_Code_of_Zoological_Nomenclature, zoological nomenclature, a type species (''species typica'') is the species name with which the name of a genus or subgenus is considered to be permanently taxonomically associated, i.e., the spe ...
)
*''
Nemalion multifidum''
**''
Nemalion multifidum subsp. monoicum''
*''
Nemalion perpusillum''
*''
Nemalion vermiculare''
Description
Simple multiaxial frond, with a soft and gelatinous core.
[Fritsch, F.E. 1965. ''The Structure and Reproduction of the Algae. Volume 11''. p.468-469][Smith, G.M. 1955. ''Cryptogamic Botany Volume 1. Algae and Fungi'']
Distribution
Habitat
Marine, mainly littoral.
Notes
References
Further reading
* Fritsch, F.E. 1965. ''The Structure and Reproduction of the Algae.'' pp. 468 - 469 Cambridge University Press
* Nicolson, D.H. & Norris, J.N. (1983). Ordinal orthography: Nemalionales vs. Nemaliales (Rhodophyta). ''Taxon'' 32: 288–292.
Red algae genera
{{rhodophyta-stub