Callithamnion tetragonum (Stackhouse) S.F.Gray 1821

Callithamnion tetragonum (Stackhouse) S.F.Gray

Callithamnion tetragonum (Stackhouse) S.F.GrayFinavarra, Co. Clare, Ireland - 08 August 2004. Michael Guiry (

Publication Details
Callithamnion tetragonum (Stackhouse) S.F.Gray 1821: 329

Published in: Gray, S.F. (1821). A natural arrangement of British plants, according to their relations to each other, as pointed out by Jussieu, De Candolle, Brown, &c. including those cultivated for use; with an introduction to botany, in which the terms newly introduced are explained; illustrated by figures. pp. vol. 1: [i]-xxviii, [1]- 824, pls I-XXI plates. London: Printed for Baldwin, Cradock & Joy, Paternoster-Row.

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Publication date: 1 Nov. 1821

Type Species
The type species (lectotype) of the genus Callithamnion is Callithamnion corymbosum (Smith) Lyngbye.

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

Conferva tetragona Stackhouse

Type Information
Type locality: "Found by Major Velley and Mr Stackhouse at the Bill of Portland, growing parasitically on the larger Fuci, principally on their stems." [Portland Bill, Dorset, England]; (Withering 1796: 405) Lectotype: Velley & Stackhouse; undated; GL; (Maggs & Hommersand 1993: 129)

Origin of Species Name
Adjective (Latin), four-angled (Stearn 1973).

General Environment
This is a marine species.

Brownish-red fronds, to 50 mm long. Unseriate filaments, coticated below, repeatedly branched with simple, alternate branches, ultimate branchlets densely clothed with tufts of alternate ramuli, corymbose, incurved, attenuate at base and apex. Articulations of main axes 2-4 times as long as broad, of ramuli 1.5 times as long as broad.

Epiphytic, lower intertidal and subtidal, widely distributed, frequent.

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

Last updated: 28 January 2022

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Citing AlgaeBase
Cite this record as:
M.D. Guiry in Guiry, M.D. & Guiry, G.M. 28 January 2022. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway.; searched on 04 December 2022

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