Electronic Flora of South Australia Family Fact Sheet


Phylum Rhodophyta – Class Bangiophyceae – Order Compsopogonales

Thallus crustose, filamentous, foliose or saccate, with individual cell walls and apical and intercalary cell divisions, attached by rhizoidal lobes of the basal cell, by rhizoids from supra-basal cells, or by a polystromatic cell cushion. Rhodoplasts single and stellate or parietal and several per cell, with or without pyrenoids. Filamentous "pseudoconchocelis" phases known in some genera.

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

Taxonomic notes: A family of 5 or 6 genera (Garbary et al. 1980a, p. 149), largely marine. Erythrotrichiaceae Smith 1933 has priority over Erythropeltidaceae Skuja (1939, p. 33) (pers. comm. P.C. Silva).


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

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

SMITH, G.M. (1933). The Fresh-water Algae of the United States. (McGraw-Hill: New York.)

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.


1. Thallus prostrate, forming a disc or cushion 1–3 cells thick and without erect filaments; rhodoplasts parietal, compact to laminate, usually with a pyrenoid


1. Thallus erect, filamentous or saccate, arising from a basal cell or a juvenile prostrate disc; rhodoplasts stellate or parietal, with or without a pyrenoid


2. Thallus erect, filamentous, one to a few cells broad; rhodoplasts stellate, with a central pyrenoid


2. Thallus saccate, rupturing to form monostromatic blades; rhodoplasts parietal, without a pyrenoid


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