Ammocharis tinneana (Kotschy & Peyr.) Milne-Redh. & Schweick. has a range that includes a large number of sub-Saharan countries including Rwanda, Zaire, Chad, Ethiopia, Somalia, Sudan, Kenya, Tanzania, Uganda, Angola, Malawi, Mozambique, Zambia, Zimbabwe, Botswana, and Namibia. Plants in habitat flower from mid November to January (Southern Hemisphere) only after a good rainstorm. Temperatures at this time often reach above 40 °C. Plants can sometimes flower twice in a season after breaking dormancy, going back into dormancy and then flowering again with the next rainfall but usually without a flush of leaves (Craib and Brown 1998).
Uluwehi Knecht has found that Ammocharis tinneana seedlings grow well outdoors in full sun in Honolulu, Hawai'i and remain evergreen year-round if never allowed to dry out. Under these conditions they are remarkably tolerant of very high humidity (70% rh+) and of high rainfall (3550 mm pa) when grown in 100% coarse horticultural pumice. Photos below taken by Hans Joschko who grows this plant in Germany.
Photos below were taken by Nicholas Wightman in Lilayi, Zambia.