Authors: K. & S.S. Larsen
Morphological description (see also description of Genus Bauhinia ; Subgenus Phanera and Section Lysiphyllum )
Large, tendrilled liana; young branches glabrous.
Leaves: bifoliolate;stipules early caducous (not seen); petiole 3-6 cm long, glabrous, produced into a 3-5 mm long mucro; leaflets 2, semicordate, 8-13 by 3.5-6.5 cm; tips acuminate 5-10 mm, base rounded; nerves 4, strongly developed and connected by several transverse secondary nerves; glabrous, shining on both surfaces (dewitii Bauhinia lv/infl FM13).
Inflorescence: simple or compound lateral racemes up to 16 cm long, with thin glabrous axis; pedicels filiform, 1.5-2 cm long; bracts triangular, minute; bracteoles very minute, inserted below the middle of the pedicel.
Flowers: (dewitii Bauhinia bud/fl FM13) Buds obovoid-acute, c. 8 mm long including the 2-3 mm long, campanulate hypanthium. Calyx during anthesis splitting into 5 glabrous lobes. Petals white with reddish streaks, subequal, oblong, short-clawed, 10-12 by 8-10 mm. Stamens 10: 5 long with filaments c. 15 mm long, hairy in lower part, anthers 1.5 mm long, opening by a longitudinal slit, 5 short with filaments half as long and smaller anthers. Ovary hairy, on a 7 mm long, hairy stipe; style glabrous, 12 mm; stigma capitate.
Pods unknown.
Distribution
Malesia: Borneo, endemic to Sarawak, only known from two collections (Kuching, Gunong Tieng and the type from foothill of Mt Doya).