BORNEO. Sarawak: Ulu Tubau, Bintulu, skeletal sandy clay soil on steep hillside by sandstone rocks, Nyabau formation, mixed Dipterocarp forest, c. 350 m., Ashton S 18439 (L); base of Bt Naoung, Ulu Muput Kanan, Anap, sandstone rocks in shade, Biban formation, common, 600 m., Oct. II, 1963. Ashton S 19360 (L). West Borneo: Sanggau, am Ufer eines Bächleins, felsig, zwischen Baumwurzeln und Steinen, Juni 23, 1964, A. Elsener 26 (L).