Abstract Four species of Botryocladia are present in Natal, B. madagascariensis and B. beckeriana being previously recorded in this region, and the range of B. leptopoda is extended southward from Tanzania to northern Natal. The fourth species is a new species, B. pienaarii, that was found growing in lower intertidal and subtidal habitats. The four species all form elongate axes but are distinct from one another and have vesicles of different sizes and arrangement that are attached to upright solid branches in patterns characteristic for each species. Structural and reproductive characters are discussed for the four species, and they are compared with similar species from other regions. Introduction Botryocladia Kylin (1931) (now. cons.) includes thirty species (Aponte Diaz 1988, Brodie and Guiry 1988) of Rhodymeniaceae having hollow, mucilage-filled, vesiculate branches distributed along short to long upright axes that consist of solid pseudoparenchymatous tissue. Species mostly occur in tropical to subtropical marine coastal regions, but some are also known in cold temperature waters, i.e. along the Pacific coast of North America from California to Vancouver Island [B. pseudodichotoma (Farlow) Kylin] and along the south coast of Australia [B. obovata (Sonder) Kylin]. Botryocladia has sympodially branched elongate axes (Kylin 1956)
Botanica Marina – de Gruyter
Published: Jan 1, 1989
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