Electronic Flora of South Australia Genus Fact Sheet

Genus PORPHYROPSIS Rosenvinge 1909: 68

Phylum Rhodophyta – Class Bangiophyceae – Order Compsopogonales – Family Erythrotrichiaceae

Thallus rose-red or greenish-brown to purple, with a basal, subparenchymatous, pulvinate base producing minute, subspherical to ovoid bladders which later rupture to form monostromatic blades 1–10 (–60) mm high, epiphytic or epizoic. Cells of blades in rows or irregular, each with a single, parietal, lobed rhodoplast without a pyrenoid.

Reproduction: Reproduction by monospores formed by unequal division of thallus cells or by release of entire cells; a pseudoconchocelis filamentous phase present in P. coccinea (Murray, Dixon & Scott 1972). Sexual reproduction unknown.

Type species: P. coccinea (J. Agardh ex Areschoug)Rosenvinge 1909: 69.

Taxonomic notes: A genus of three species, the type from northern temperate regions (Garbary et al. 1980b, p. 159) and some southern regions (Ricker 1987, p. 149), P. minuta from southern Australia, and P. imperfecta Kornmann & Sahling (1985, p. 231) from Helgoland.

References:

GARBARY, D.J., HANSEN, G.I. & SCAGEL, R.F. (1980b). The marine algae of British Columbia and northern Washington: Division Rhodophyta (red algae), Class Bangiophyceae. Syesis 13, 137–195.

KORNMANN, P. & SAHLING, P.-H. (1985). Erythropeltidaceen (Bangiophyceae, Rhodophyta) von Helgoland. Helgoländer Meeresunters. 39, 213–236.

MURRAY, S.N., DIXON, P.S. & SCOTT, J.L. (1972). The life history of Porphyropsis coccinea var. dawsonii in culture. Br. phycol. J. 7, 323–333.

RICKER, R.W. (1987). Taxonomy and biogeography of Macquarie Island Seaweeds. [British Museum (N.H.): London.]

ROSENVINGE, L.K. (1909). The marine algae of Denmark. Part 1. Introduction. Rhodophyceae. 1. (Bangiales and Némalionales). K. danske Vidensk. Selsk. Biol. Skr., 7 Raekke, Afd. 7, 1–151, Plates 1, 2,2 maps.

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.


Disclaimer Copyright Disclaimer Email Contact:
State Herbarium of South Australia
Government of South Australia Government of South Australia Department of Environment, Water and Natural Resources