Disa welwitschii

Disa welwitschii is a perennial plant and geophyte belonging to the genus Disa. The plant is native to Angola, Burundi, Democratic [Republic of Congo], Gabon, Guinea, Ivory Coast, Cameroon, Kenya, Liberia, Malawi, Mozambique, Nigeria, Uganda, Republic of Congo, Central [African Republic], Sierra Leone, Sudan, Tanzania, Zambia and Zimbabwe. In South Africa, the plant occurs in Limpopo.
There are two subspecies:

Disa welwitschii subsp. occultans H.P.Linder
Disa welwitschii subsp. ''welwitschii''