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Order Gracilariales

Family Pterocladiophilaceae

Gelidiocolax margaritoides (M.T.Martin & M.A.Pocock) K.-C.Fan & Papenfuss 1959: 33-34

Parasitic on Beckerella pinnatifida, forming small white pustules just visible to the naked eye; pustules composed entirely of parasite tissue, rhizoidal filaments penetrating into the host tissue; spermatangia, cystocarps and tetrasporangia on separate pustules. For further details see Martin & Pocock (1953)(as Choreocolax margaritoides) and Fan & Papenfuss (1959).

Collections, ecology and regional distribution

Recorded in the Port Alfred area (39). (Martin & Pocock 1953).

World distribution: Apparently a South African endemic.

Type locality: Kleinemonde, east of Port Alfred (Martin & Pocock 1953).


Gelidiocolax margaritoides. Tetrasporic pustule on host tissue. Drawn from photograph in Martin & Pocock (1953: Plate 10, Fig. c).


References Gelidiocolax margaritoides

Fan, K.-C. & Papenfuss, G.F. 1959. Red algal parasites occurring on members of the Gelidiales. Madroño 15: 33-38, 10 figs.

Martin, M.T. & Pocock, M.A. 1953. South African parasitic Florideae and their hosts. 2. Some South African parasitic Florideae. Journal of the Linnean Society of London, Botany 55: 48-64, 7 figs, pls 10-12.


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.