Electronic Flora of South Australia Genus Fact Sheet
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.
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.
Womersley, H.B.S. (14 December, 1987)
The Marine Benthic Flora of Southern Australia
©Board of the Botanic Gardens and State Herbarium, Government of South Australia
State Herbarium of South Australia