Schoenus australis
Schoenus australis is a species of sedge endemic to locations near the southern coast of South Africa. Description. "Schoenus australis" is one of the more robust species of southern African "Schoenus". The inflorescences of this species are relatively long and wide, often appearing 'bearded' because of the notable primary inflorescence bracts, as well as long prophyll and glume (bract) pointed tips (mucros). A similar species to "S. australis" is "Schoenus loreus", which also has relatively long and dense inflorescences, but its leaves are non-channelled (appearing flat) compared to the roundish leaves of "S. australis". A second species  that is similar to "S. australis" is "Schoenus riparius": however, that species is taller and endemic to wet areas on the Cape Peninsula of South Africa. In addition, the inflorescences of "S. australis" are almost always shorter and narrower than those of "S. riparius". "Schoenus crassus" and "Schoenus cuspidatus" could also be mistaken for "S. australis", with the distribution of all three species overlapping. "Schoenus crassus" tends to have shorter (i.e. less than half the culm height) and firmer leaves compared to those of "S. australis". Furthermore, the lower glumes of the spikelets of "S. australis" are relatively longer and  aristate compared to the shorter, cuspidate lower spikelet glumes of "S. cuspidatus". Taxonomy. "Schoenus australis" is a species in family Cyperaceae, tribe Schoeneae, which includes genera such as "Lepidosperma", "Oreobolus", "Costularia", "Tetraria" and "Gahnia". "Schoenus australis" is closely-related to other southern African "Schoenus" species, specifically, species in the "S. cuspidatus" and allies group. Southern African "Schoenus" were once classified as "Tetraria"; however, we now know that the two groups are evolutionary distinct based on molecular and morphological differences. To ensure that this group of sedges is monophyletic (i.e. the genus only has closely related species), several species of "Epischoenus  and the southern African Tetraria" were transferred into "Schoenus". In the field, the southern African "Schoenus" can be distinguished from "Tetraria" species by the absence of reticulate sheaths at the bases of the flowering stems and their lack of stem leaves. Distribution and habitat. "Schoenus australis" is endemic to locations along the southern coast of South Africa, with its distribution ranging from Rooi Els in the Western Cape Province to the Port Elizabeth area of the Eastern Cape Province. This species has mostly been recorded from locations with sand substrates (e.g. dunes), but collections have also been made from seepage  areas, road edges, floodplains, sandstone fynbos and limestone fynbos. The elevation range of "S. australis" has mostly been relatively low, ranging from sea level to 600 m.