Pelargonium saxatile (Geraniaceae: Section Hoarea), a new species from the southwestern Cape,South Africa,and a key to the species of the P. dipetalum group |
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| Affiliation: | 1. Compton Herbarium, South African National Biodiversity Institute, Private Bag X7, 7735 Claremont, Cape Town, South Africa;2. Research Centre for Plant Growth and Development, School of Biological and Conservation Sciences, University of KwaZulu-Natal Pietermaritzburg, Private Bag X01, Scottsville 3209, South Africa;3. B.A. Krukoff Curator of African Botany, Missouri Botanical Garden, P.O. Box 299, St. Louis, Missouri 63166, USA |
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| Abstract: | 
The new species Pelargonium saxatile is a local endemic of sandstone rock pavement in the Elandskloofberge near Wellington in Western Cape Province, South Africa. One of just seven species of sect. Hoarea that have only the posterior two petals developed, it most closely resembles Pelargonium dipetalum from the southern Cape coastal lowlands but is distinguised by its rosette of numerous, small, mainly simple leaves, glabrous above and strigose beneath only along the midrib and sometimes also the veins. In addition, the pink flowers have the dorsal filament shorter, 4–5 mm long. We include a key to the species of the P. dipetalum group. |
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