Nemalion is a genus of red algae that contains approximately ten species, including N. helminthoides.[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
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Nemalion attenuatum
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Nemalion cari-cariense
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Nemalion helminthoides
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Nemalion longicolle
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Nemalion lubricum (type species)
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Nemalion multifidum
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Nemalion multifidum subsp. monoicum
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Nemalion perpusillum
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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
Further reading
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Fritsch, F.E. 1965. The Structure and Reproduction of the Algae. pp. 468 - 469 Cambridge University Press
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Nicolson, D.H. & Norris, J.N. (1983). Ordinal orthography: Nemalionales vs. Nemaliales (Rhodophyta). Taxon 32: 288–292.
