Electronic Flora of South Australia Family Fact Sheet

ORDER COMPSOPOGONALES Skuja 1939: 34

Phylum Rhodophyta – Class Bangiophyceae

Thallus crustose, filamentous and usually simple, foliose or saccate, with apical and/or intercalary cell divisions, attached by a specialised basal cell with rhizoidal lobes but usually without descending rhizoids from supra-basal cells. Rhodoplasts one to a few per cell, axial or parietal, with or without a pyrenoid.

Reproduction: Reproduction by monospores liberated from differentiated monosporangia cut off from a vegetative cell by a curved wall.

Sexual reproduction doubtful (except in Erythrotrichopeltis Kornmann 1984).

Taxonomic notes: An order of three families (Garbary et al. 1980a, p. 149), one of which has marine representatives. Garbary et al. (1980a, p. 149) renamed this order the Erythropeltidales, although they included in it the family Compsopogonaceae on which the order Compsopogonales Skuja (1939, p. 34) had been based.

The Compsopogonales are distinguished by their cellular construction, by reproduction by monospores liberated from a "differentiated" sporangium cut off from a vegetative cell by a curved wall, and by lack of pit-connections in the "pseudoconchocelis" phase in genera where this occurs.

References:

GARBARY, D.J., HANSEN, G.I. & SCAGEL, R.F. (1980a). A revised classification of the Bangiophyceae (Rhodophyta). Nova Hedwigia 33, 145–166.

KORNMANN, P. (1984). Erythrotrichopeltis, eine neue Gattung der Erythropeltidaceae (Bangiophyceae, Rhodophyta). Helgoländer Meeresunters. 38, 207–224.

SKUJA, H. (1939). Versuch einer systematischen Einteilung der Bangioideen oder Protoflorideen. Acta Horti Bot. Univ. Latv. 11/12, 23–40.

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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