''Nemalion'' is a genus of
red algae 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:
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Nemalion amoenum
''Nemalion'' is a genus of red algae 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 n ...
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Nemalion attenuatum
''Nemalion'' is a genus of red algae 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 n ...
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Nemalion cari-cariense
''Nemalion'' is a genus of red algae 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 n ...
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Nemalion helminthoides
''Nemalion helminthoides'' is a small marine alga in the division Rhodophyta
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 ...
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Nemalion longicolle
''Nemalion'' is a genus of red algae 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 n ...
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Nemalion lubricum
''Nemalion'' is a genus of red algae 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 n ...
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type species
In 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 species that contains the biological type specimen( ...
)
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Nemalion multifidum
''Nemalion'' is a genus of red algae 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 n ...
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Nemalion multifidum subsp. monoicum''
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Nemalion perpusillum
''Nemalion'' is a genus of red algae 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 no ...
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Nemalion vermiculare
''Nemalion'' is a genus of red algae 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 no ...
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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