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Order Bryopsidales

Family Pseudocodiaceae

Monogeneric family: characters as for genus. The family was created to accommodate the genus, which is anatomically intermediate between Halimeda and Codium.

Genus Pseudocodium Weber-van Bosse

Thallus erect, comprising holdfast and branched cylindrical or compressed axes. Anatomically comprising a core (medulla) of siphons that produce a cortex of swollen, adherent branches (utricles) that are polygonal or hexagonal in surface view. Six species are currently accepted (Guiry & Guiry 2017): one of these is found on our south coast.

Pseudocodium devriesii Weber-van Bosse 1896: 209-212

Thalli erect, dark green, somewhat flaccid, cylindrical at base, 1-3 mm wide, compressed distally, dichotomously branched up to 8 times. Utricles tightly adherent and more or less polygonal in surface view. Spherical gametangia develop from the medullary siphons (Coppejans et al. 2005).

Collections, ecology and regional distribution

Common in lower eulittoral, rock pools, sublittoral fringe and shallow sublittoral. Found from East London through to northern KwaZulu-Natal (41-58).

World distribution

South Africa, Mozambique, Madagascar, as well as subtidally in Oman and Western Australia (De Clerck et al. 2008).

Type locality: Isipingo Beach, near Durban (De Clerck et al. 2008).


 Pseudocodium devriesii, Double Mouth, habit.

 Pseudocodium devriesii, Double Mouth, showing branching pattern.


References Pseudocodium devriesii

Coppejans, E., Leliaert, F., Verbruggen, H. 2005. Green Algae. In De Clerck, O., J.J.Bolton, R. J. Anderson and E. Coppejans, 2005. Guide to the Seaweeds of Kwazulu-Natal. National Botanic Garden of Belgium, Brussels (Scripta Botanica Belgica), pp 40-93.

De Clerck, O., Verbruggen, H., Huisman, J.M., Faye, E.J., Leliaert, F., Schils, T. & Coppejans, E. (2008). Systematics and biogeography of the genus Pseudocodium (Bryopsidales, Chlorophyta), including the description of P. natalense sp. nov. from South Africa. Phycologia 47: 225-235.

M.D. Guiry in Guiry, M.D. & Guiry, G.M. 2017. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway.; searched on 17 May 2017.

Weber-van Bosse, A. (1896). On a new genus of siphonean algae - PseudocodiumJournal of the Linnean Society of London, Botany 32: 209-212, Plate 1.


Cite this record as:

Anderson RJ, Stegenga H, Bolton JJ. 2016. Seaweeds of the South African South Coast.
World Wide Web electronic publication, University of Cape Town,; Accessed on 02 March 2024.