Published in Bulletin of the Natural History Museum (Botany), in 1993, in volume 23, issue 1, pages 2-51

Published in Bulletin of the Natural History Museum. Botany series., in 1993, in volume 23, issue 1, pages 51-54

Published in Bulletin of the Natural History Museum. Botany series., in 1993, in volume 23, issue 2, pages 55-59

Published in Bulletin of the Natural History Museum. Botany series., in 1993, in volume 23, issue 2, pages 61-65

Published in Bulletin of the Natural History Museum. Botany series., in 1993, in volume 23, issue 2, pages 67-70

Published in Bulletin of the Natural History Museum (Botany), in 1993, in volume 23, issue 2, pages 71-177