Helminthora divaricata (C.Agardh) J.Agardh 1852

Publication Details
Helminthora divaricata (C.Agardh) J.Agardh 1852: 416

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 2, fasc. 1. pp. 337 [bis]-351 [bis] 352-506. Lundae [Lund]: C.W.K. Gleerup.

Request PDF

Publication date: Jan-Jun

Type Species
This is the type species (holotype) of the genus Helminthora.

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

Basionym
Mesogloia divaricata C.Agardh

Type Information
Type locality: In mari Atlantico; (Agardh 1824: 51) Lectotype: LD; herb. alg. Agardh 31980 (Dixon & Irvine 1977: 140) Notes: The lectotype is from Cádiz, Spain.

Origin of Species Name
Adjective (Latin), divaricate, spreading at a wide angle (Stearn 1983).

General Environment
This is a marine species.

Description
Cylindrical, softly gelatinous, pale reddish-brown fronds, 2 mm wide, 200 mm long. Much branched, ultimate branchlets short, irregular, holdfast small, discoid.

Habitat
A summer annual (May or June-September or October), epiphytic on Polyides rotunda in lower tidal pools and in the shallow subtidal, widely distributed on western and south-western coasts, sporadic but often locally abundant, particularly in large, sandy pools.

Key Characteristics
Association with Polyides rotunda; gelatinous consistency, and profuse, almost pinnate branches.

Similar Species
Nemalion helminthoides is broader, deeper red in colour, and does not have as many branches; Nemalion does not occur in pools.

Created: 30 March 1996 by M.D. Guiry.

Last updated: 21 August 2020

Verification of Data
Users are responsible for verifying the accuracy of information before use, as noted on the website Content page.

Linking to this page: https://www.algaebase.org/search/species/detail/?species_id=23

Citing AlgaeBase
Cite this record as:
M.D. Guiry in Guiry, M.D. & Guiry, G.M. 21 August 2020. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. https://www.algaebase.org; searched on 22 November 2024

Currently in AlgaeBase: