Flora of Tropical East Africa - Ruppiaceae (1989) was prepared at the Royal Botanic Gardens/Kew with the assistance from the East African Herbarium. Ruppiaceae submerged monoecious glabrous aquatic herbs of alkaline or brackish water, sometimes in sea-water.

Flora of Tropical East Africa - Aponogetonac (1989) was prepared at the Royal Botanic Gardens/Kew with the assistance from the East African Herbarium. The aponogetonaceae family are rhizomatous glabrous monoecious or rarely dioecious herbs with tubers, usually growing submerged in fresh water or (after drying up) on wet soil.