Electronic Flora of South Australia Genus Fact Sheet

Genus POLYCOELIA J. Agardh 1849: 87

Phylum Rhodophyta – Class Florideophyceae – Order Gigartinales – Family Kallymeniaceae

Thallus flat, much branched complanately, di- to polychotomous, often proliferous from the margins. Structure. Medulla of large, isodiametric to slightly elongate cells arranged in a single layer, surrounded by slender filaments which also form a broad cortex of interlocked filaments becoming anticlinal in the outer cortex.

Reproduction: Carpogonial branch systems monocarpogonial with elongate cells; fusion cell forming connecting filaments. Auxiliary cell systems with 3–5 subspherical subsidiary 246 KALLYMENIACEAE Polycoelia cells, one of which may cut off a filament of 1–3 cells. Carposporophyte with prominent groups of carposporangia surrounded by gonimoblast filaments; cystocarps scattered, not to partly protuberant. Spermatangia scattered over the thallus.

Tetrasporangia ovoid, cruciately divided, scattered in the outer cortex.

Type (and probably the only) species: P. laciniata J. Agardh 1849: 88.

References:

AGARDH, J.G. (1849). Algologiska bidrag. Öfvers. K. Svenska Vetensk. Akad. Rh-h. 6(3), 79–89.

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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