Electronic Flora of South Australia Genus Fact Sheet

Genus THAMNOPHYLLIS Norris 1964: 104

Phylum Rhodophyta – Class Florideophyceae – Order Gigartinales – Family Kallymeniaceae

Thallus foliose to divided or marginally proliferous. Structure. Medulla of large ovoid cells with conspicuous filaments of relatively short and thick cells between them and tending to be massed in the central medullary region in older parts; darkly staining refractive cells prominent.

Reproduction: Carpogonial branch systems mono- or polycarpogonial with numerous clavate subsidiary cells. Auxiliary cell systems with numerous subsidiary cells which may cut off further cells. Carposporophyte with groups of carposporangia surrounded by gonimoblast filaments.

Tetrasporangia cruciately or irregularly divided, scattered in the outer cortex.

Type species: T. pocockiae Norris 1964: 105.

Taxonomic notes: Thamnophyllis includes three species and resembles Callophyllis in thallus structure, having a large-celled medulla intermixed with smaller filaments. It differs in the presence of prominent refractive cells and the tendency for aggregation of the filaments in the central region of the medulla in older parts of the thallus. It also differs from Callophyllis in being non-procarpic and having distinct auxiliary cell systems, and in being foliose rather than much branched; in these respects it is related to Kallymenia.

References:

NORRIS, R.E. (1964). The morphology and taxonomy of South African Kallymeniaceae. Bot. Mar. 7, 90–129.

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

Author: H.B.S. Womersley

Publication: Womersley, H.B.S. (14 January, 1994)
The Marine Benthic Flora of Southern Australia
Rhodophyta. Part IIIA, Bangiophyceae and Florideophyceae (to Gigartinales)
Reproduced with permission from The Marine Benthic Flora of Southern Australia Part IIIA 1994, by H.B.S. Womersley. Australian Biological Resources Study, Canberra. Copyright Commonwealth of Australia.


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