Gideon F. Smith,^* Estrela Figueiredo<sup>**


*</sup>Office of the Chief Director: Biosystematics Research & Biodiversity Collections, South African National Biodiversity Institute, Private Bag X101, Pretoria, 0001 South Africa / H.G.W.J. Schweickerdt Herbarium, Department of Plant Science, University of Pretoria, Pretoria, 0002 South Africa / Centre for Functional Ecology, Departamento de Ciências da Vida, Universidade de Coimbra, 3001-455 Coimbra, Portugal (email: g.smith@sanbi.org.za).
^**Department of Botany, P.O.Box 77000, Nelson Mandela Metropolitan University, Port Elizabeth, 6031 South Africa / Centre for Functional Ecology, Departamento de Ciências da Vida, Universidade de Coimbra, 3001-455 Coimbra, Portugal (email: estrelafigueiredo@hotmail.com).