An annotated checklist of the coastal forests of Kenya, East Africa by Phytokeys (May 2020) lists 7 genera
and 13 species.
The species that I am growing is:
Clean off the outer flesh and sow the seeds immediately. The seed is recalcitrant and loses viability in a
matter of days. Seed generally germinates in about 10 days, but this could take up to 60 days, depending on
the heat, water, and light. If seed ripens near the end of the growing season, ensure that the young plants
are kept warm during the first winter, particularly if you live in a frost zone. Prevent too much moistness, as
this will certainly cause the roots to rot.
Source: Growing rare plants by Geoff Nichols