PART OF A SPECIAL ISSUE ON POLLINATOR-DRIVEN SPECIATION Pollinator shifts as triggers of speciation in painted petal irises (Lapeirousia: Iridaceae)

Felix Forest1,*, Peter Goldblatt2,3, John C. Manning3,4, David Baker1, Jonathan F. Colville4, Dion S. Devey1, Sarah Jose1, Maria Kaye1 and Sven Buerki1 Jodrell Laboratory, Royal Botanic Gardens, Kew, Richmond, Surrey TW9 3DS, UK, B.A. Krukoff Curator of African Botany, Missouri Botanical Garden, PO Box 299, St Louis, MO 63166, USA, Research Centre for Plant Growth and Development, School of Life Sciences, University of KwaZulu-Natal, Pietermaritzburg, Private Bag X01, Scottsville 3209, South Africa and South African National Biodiversity Institute, Kirstenbosch Research Centre, Private Bag X7, Claremont 7735, Cape Town, South Africa * For correspondence. E-mail f.forest@kew.org