L.P.Kvist & L.E.Skog (C.V.Morton) 1988 - Kvist LP, Skog LE (1988) The genus Cremosperma (Gesneriaceae) in Ecuador. Nordic Journal of Botany 8(3): 259-269. doi: 10.1111/j.1756-1051.1988.tb01719.x.
There is no corrections for Cremosperma hirsutissimum var. demissum yet.