Schizymenia dubyi (Chauvin ex Duby) J.Agardh 1851

Publication Details
Schizymenia dubyi (Chauvin ex Duby) J.Agardh 1851: 171

Published in: 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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Type Species
This is the type species (holotype) of the genus Schizymenia.

Status of Name
This name is of an entity that is currently accepted taxonomically.

Basionym
Halymenia dubyi Chauvin ex Duby

Type Information
Type locality: Cherbourg, France; (Womersley & Kraft 1994: 280) Lectotype: STR; (Womersley & Kraft 1994: 280) Notes: Cherbourg, Manche, France (Silva et al. 1996: 323).

Eponomy
Named for Jean Étienne Duby (1798-1885), Swiss botanist.

General Environment
This is a marine species.

Description
Gametophytes: soft and fleshy, brownish-red fronds, 500 mm long, 250 mm broad, irregularly split or lobed, rarely proliferous, with a very short (2-3 mm) stipe from a minute attachment disc. Tetrasporophyte (Haematocelis-phase): thick fleshy crust; difficult to identify and rarely reported.

Habitat
Gametophytes are found in mid-intertidal, large pools and the shallow subtidal (?? m), annual, developing in spring; south-western and western coasts north to St. Kilda and east to Dorset, uncommon; tetrasporophytic crusts are apparently exclusively found in the shallow subtidal. Epilithic, in pools exposed to some wave action, midlittoral to shallow sublittoral, tolerant of some sand cover (Dixon & Irvine 1977: 176).

Key Characteristics
Fleshy frond, lack of lobing and, generally, marginal proliferations; when dried onto paper the fertile fronds feel like fine sandpaper to the the touch.

Similar Species
Dilsea carnosa is much thicker, commoner, and more cartilaginous, has rounded-spathulate blades, and several blades arise from a relatively large basal disk; Halarachnion ligulatum is thin and filmy, never fleshy;Kallymenia reniformis is commoner in the subtidal generally lobed and the lobes are frequently kidney-shaped.

Created: 31 March 1996 by M.D. Guiry.

Last updated: 11 July 2022

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Linking to this page: https://www.algaebase.org/search/species/detail/?species_id=115

Citing AlgaeBase
Cite this record as:
G.M. Guiry in Guiry, M.D. & Guiry, G.M. 11 July 2022. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. https://www.algaebase.org; searched on 21 November 2024

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