Published in Bulletin du Muséum national d'histoire naturelle. Section B, botanique, biologie et écologie végétales, phytochimie, in 1976, in volume 25, issue 365, pages 21-32

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Published in Journal of South African Botany, in 1982, in volume 48, issue 1, pages 23-37

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Published in The Wilson Journal of Ornithology, in 2007, in volume 119, issue 1, pages 142-143

Created: 2017-07-16, modified: 2017-07-16

Published in Journal of South African botany, in 1965, in volume 31, pages 293-306

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Published in Forktail, in 2012, in volume 28, pages 93-100

Created: 2019-05-12, modified: 2019-05-12

Published in Journal of South African botany, in 1968, in volume 34, pages 203-214

Created: 2024-09-17, modified: 2024-09-17