Photos: Suddee, S.;Leeratiwong, C.

Photo: Bramley, G.


Genera Incertae Sedis


Lianas; leaves opposite, ternately to biternately compound, leaflets ovate to obovate, entire (rarely few-toothed); inflorescence of axillary cymes, often forming lax paniculiform thyrses; calyx actinomorphic, accrescent, 5-lobed, lobes greatly elongate and winglike in fruit; corolla white to yellow, nearly actinomorphic or 1-lipped and then with only anterior lip present, subequally 5-lobed; stamens 4, equal to subequal, included or exserted, filaments straight, thecae parallel to slightly divergent, separate at dehiscence; pollen tricolpate, psilate, tectate-perforate; ovary unlobed; stigma-lobes equal or subequal; disc absent; fruit dry, indehiscent, 2-chambered, 1-2 seeded (the other ovules aborting), turbinate, apex conical, rounded or truncate-depressed, surface usually longitudinally striate, pubescent; endosperm absent.  Eight species in forests of Malaysia, Indonesia, Philippines, New Guinea, and Melanesia.


Native to:

41 Indo-China
42 Malesia
43 Papuasia
50 Australia


Petraeovitex Oliv., Hooker's Icon. Pl. 15: t. 1420 (1883); Munir, Gard. Bull. Straits Settlem. 21: 215-257 (1965).

Image resource

Royal Botanic Gardens, Kew