Schizymenia J.Agardh, 1851, nom. et typ. cons.

Holotype species: Schizymenia dubyi (Chauvin ex Duby) J.Agardh

Original publication and holotype designation: Agardh, J.G. (1851). Species genera et ordines algarum, seu descriptiones succinctae specierum, generum et ordinum, quibus algarum regnum constituitur. Volumen secundum: algas florideas complectens. Part 1. pp. [i]-xii, [1]-336 + 337-351 [Addenda and Indices]. Lundae [Lund]: C.W.K. Gleerup.

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Description: Plants of the largest species reach 70 cm in length. Thalli are foliose and of generally firm consistency. Cortices contain prominent gland cells. Fertilized carpogonia first fuse to adjacent nutritive auxiliary cells borne on the supporting cells, from which cells the connecting filaments radiate. Besides elucidating these details, Ardre (1980) has shown that carpospores germinate into tetrasporangial crusts identical in morphology to the type species of Haematocelis, with Sciuto et al. 1979) finding confirming evidence in an amino acid common to the gametophytic and tetrasporangial phases. Tetrasporangia are zonately divided.

Information contributed by: G.T. Kraft. The most recent alteration to this page was made on 2017-01-24 by M.D. Guiry.

Taxonomic status: This name is of an entity that is currently accepted taxonomically.

Gender: This genus name is currently treated as feminine.

Most recent taxonomic treatment adopted: Schneider, C.W. & Wynne, M.J. (2007). A synoptic review of the classification of red algal genera a half a century after Kylin's "Die Gattungen der Rhodophyceen". Botanica Marina 50: 197-249.

Comments: Distribution: The type species is widespread in Atlantic Europe from Great Britain to Morocco, appearing sporadically in the Mediterranean (Sciuto et al. 1979). Other species occur in Japan, the eastern Pacific from Alaska to Baja California, Chili, New Zealand, southern Australia and South Africa. Although plants have recorded from 18 m depths (Abbott and Hollenberg 1976), the genus as a whole seems to be characteristic of lower intertidal to shallow subtidal habitats.

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Some of the descriptions included in AlgaeBase were originally from the unpublished Encyclopedia of Algal Genera, organised in the 1990s by Dr Bruce Parker on behalf of the Phycological Society of America (PSA) and intended to be published in CD format. These AlgaeBase descriptions are now being continually updated, and each current contributor is identified above. The PSA and AlgaeBase warmly acknowledge the generosity of all past and present contributors and particularly the work of Dr Parker.

Descriptions of chrysophyte genera were subsequently published in J. Kristiansen & H.R. Preisig (eds.). 2001. Encyclopedia of Chrysophyte Genera. Bibliotheca Phycologica 110: 1-260.

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M.D. Guiry in Guiry, M.D. & Guiry, G.M. 24 January 2017. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway.; searched on 25 June 2024

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