Nice picture! Are these your bulbs?
The taxon Haemanthus multiflorus has sunk following the creation of genus Scadoxus. The species is now known as Scadoxus multiflorus which is widely distributed from tropical South Africa and Zimbabwe through Kenya, Tanzania and Malawi to the Yemen Peninsula. For reason of its wide distribution, Scadoxus multiflorus evolves a number of forms and varieities. I have got a miniature form which is endemic to Socotra Island off the Yemen coast. Mature bulbs of this miniature form is no larger than 2 cm in diameter yet never has the bulb ever flowered for me.
Genus Scadoxus comprises a small number of species:
S. cinnabarinus - an exceedingly rare species native to tropical west Africa
S. cyrtanthiflorus - Uganda
S. membranaceus - grows in deep shade. South Africa
S. nutans - Zimbabwe
S. pole-evansii - Zimbabwe
S. pseudocaulus - unusual species native to west Africa
S. puniceus - South Africa
It is reported that "new" species have been discovered in different parts of Africa but these findings are subject to confirmation of identity.