Neodriessenia : a New Genus of Melastomataceae

Neodriessenia, a new genus of Melastomataceae, endemic to the Island of Borneo, is described here. Neodriessenia is allied to Driessenia Korth. but differs in having stamens with conspicuously produced connective which are dorsally spurred and ventrally long produced appendage with subdivergent apex and in the presence of characteristic 4-lobed glands all along the branches, leaves and inflorescence ; whereas the genus Driessenia Korth. has stamens with slightly produced connective which are dorsally spurred and ventrally bisetose and has no 4-lobed glands. Following new species, new varieties and new combinations are established here: Neodriessenia hirta (Ridl.) Nayar, N. hirta (Ridl.) Nayar var. petiolata Nayar, N.pilosa Nayar, N. rubrovenia Nayar, N. scorpioidea (Stapf) Nayar, N. crystallina ( Stapf) Nayar and N. purpurea Nayar.