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Electronic Flora of South Australia Genus Fact Sheet
Phylum Rhodophyta – Family Rhodomelaceae – Tribe Herposiphonieae
Thallus basally prostrate, above largely free of the host, complanately branched with indeterminate axes bearing 5–7 (–13) alternate, distichous, simple determinate laterals between indeterminate laterals. Attachment by rhizoids. Structure. Apical cells segmenting transversely, subapical cells obliquely to form a lateral. Axes with 11 pericentral cells, determinate laterals with 8 pericentral cells. Trichoblasts present subapically on determinate laterals. Rhizoids cut off from pericentral cells, with digitate haptera.
Reproduction: Unknown.
Type species: H. plurisegmenta Womersley
Taxonomic notes: Herposiphoniella differs from Herposiphonia in having 5–7 (–13) determinate laterals between the indeterminate laterals, in contrast to 3 in the latter genus. It is named for its close relationship to Herposiphonia.
References: The Marine Benthic Flora of Southern Australia Part IIID
Publication:
Womersley, H.B.S. (24 February, 2003)
The Marine Benthic Flora of Southern Australia
Rhodophyta. Part IIID. Ceramiales – Delesseriaceae, Sarcomeniaceae, Rhodomelaceae
Reproduced with permission from The Marine Benthic Flora of Southern Australia Part IIID 2003, by H.B.S. Womersley. Australian Biological Resources Study, Canberra. Copyright Commonwealth of Australia.
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