Electronic Flora of South Australia Genus Fact Sheet

Genus ASTERONEMA Delépine & Asensi 1975: 296

Phylum Phaeophyta – Order Ectocarpales

Thallus densely tufted, much branched but with long, unbranched rows of cells, uniseriate and of similar diameter throughout the filaments, attached by branched multicellular rhizoids; phaeophycean hairs absent or occasional; epilithic or epiphytic. Growth by divisions of the cylindrical to slightly inflated apical cells and some intercalary divisions. Cells with elongate phaeoplasts radiating from the cell centre or laminate, with a central pyrenoid, and with physodes.

Reproduction: Reproduction by unilocular pedicellate meiosporangia and plurilocular gametangia, on separate plants.

Type species: A. australe Delépine & Asensi.

Taxonomic notes: A genus of two closely related species, the type from Kerguelen I. and Patagonia, and A. ferruginea from eastern southern Australia.

References:

DELÉPINE, R. & ASENSI, A. (1975). Asteronema nov. gen. nouveau genre de Pheophycee australe. Bull. Soc. bot. Fr. 122, 295–304.

The Marine Benthic Flora of Southern Australia Part II complete list of references.

Author: H.B.S. Womersley

Publication: Womersley, H.B.S. (14 December, 1987)
The Marine Benthic Flora of Southern Australia
Part II
©Board of the Botanic Gardens and State Herbarium, Government of South Australia


Disclaimer Copyright Disclaimer Email Contact:
State Herbarium of South Australia
Government of South Australia Government of South Australia Department of Environment, Water and Natural Resources