Three new species of Sarcocornia (Chenopodiaceae) from South Africa
MetadataShow full item record
Intensive field studies and collection of specimens conducted from 2000 to 2006 were aimed at the description of vegetation of saline habitats of southern Africa (Mucina et al. 2006a – c). This also set the basis for a systematic and biogeographical study of South African Sarcocornia (Steffen 2006), which is a prominent floristic element of hygrohalophytic habitats worldwide. Our molecular phylogenetic studies based on ETS and chloroplast-genome sequences and our intensive morphological survey of the genus (Steffen et al. 2007, Steffen et al. in press) revealed that Sarcocornia A. J. Scott contains two species not recognised in older revisions by Moss (1954), Tölken (1967) and O’Callaghan (1992). Furthermore, a third species is proposed to be newly described here. The known collections pertinent to this taxon had been previously considered to represent Sarcocornia perennis (Mill.) A. J. Scott, a species well-known from Eurasia (e.g. Moss 1954; Tölken 1967; O’Callaghan 1992; Davy et al. 2006). Despite its morphological and ecological similarity to the Eurasian S. perennis, detailed morphological investigations revealed differences, mainly in seed morphology. A recent molecular-phylogenetic analysis of the Salicornioideae (Kadereit et al. 2006) showed that S. perennis is clearly diphyletic and that the southern African “S. perennis” (sensu auctorum austroafricanum) represents an independent evolutionary entity.
This item may be available from Professor Ladislav Mucina
Showing items related by title, author, creator and subject.
Steffen, S.; Mucina, Ladislav; Kadereit, G. (2010)Sarcocornia comprises ca. 20–24 perennial, halophytic herb and shrub species. The genus is distinct from other genera in the Salicornioideae in having flowers that are more or less equal in size, arranged in a row, and ...
Mucina, Ladislav; Steffen, S.; Kadereit, G. (2010)Sarcocornia comprises ca. 20–24 perennial, halophytic herb and shrub species. The genus is distinct from other genera in the Salicornioideae in having flowers that are more or less equal in size, arranged in a row, and ...
Ecology and ecophysiology of southwestern Australian hakea species with contrasting leaf morphology and life forms.Groom, Philip K. (1996)Members of the genus Hakea (Proteaceae) are sclerophyllous, evergreen perennial shrubs or small trees endemic to Australia, with 65% of species confined to the South-West Botanical Province (southwestern Australia). ...