Published in Bulletin of The African Bird Club, in 1997, in volume 4, issue 1, pages 29-30

Created: 2021-02-10, modified: 2021-02-10

Published in Bulletin of The African Bird Club, in 2008, in volume 15, issue 2, pages 253-254

Created: 2021-02-23, modified: 2021-02-23

Published in Annals of the Missouri Botanical Garden, in 1999, in volume 86, pages 259-296

Created: 2010-01-08, modified: 2015-12-17