Electronic Flora of South Australia Family Fact Sheet

ORDER PORPHYRIDIALES Kylin 1937: 122

Phylum Rhodophyta – Class Bangiophyceae

Thallus unicellular or with cells embedded in a mucilaginous sheath as amorphous or pseudofilamentous colonies, uniseriate to multiseriate, basal attachment cell not differentiated. Rhodoplasts single and stellate with a central pyrenoid, or one to few, discoid to lobed, without pyrenoids.

Reproduction: Reproduction by cell division, release of vegetative cells, or by endospores.

Taxonomic notes: An order of two families, the Porphyridiaceae and the Phragmonemataceae, the latter unknown from southern Australia. The order is characterised by its essentially unicellular or colonial form, in the latter case with the cells embedded in a mucilaginous sheath and arranged somewhat irregularly, not as a filament of closely adjacent cells with juxtaposed common walls.

References:

KYLIN, H. (1937). Uber eine marine Porphyridium - Art. K. Fysiogr. Sällsk. Lund Förhandl. 7, 119–123.

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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