Accession numbers of Saintpaulia sequences used in the analyses and specimen vouchers accession numbers and depositories.

Name sensu Darbyshire (2006) reflects the updated taxonomy. Abbreviations are as follows: Royal Botanic Gardens, Kew - K; Royal Botanic Garden, Edinburgh - E; National Museums of Kenya, Nairobi - NMK; East African Herbarium, National Museum of Kenya, Nairobi - EA_NMK. * misidentification most likely Saintpaulia ionantha subsp. ionantha (see Discussion for further comments).