Wiry twiner to several metres long, latex white. Leaf blade elliptic to ovate, succulent, flat, up to 10 cm long and 4 cm wide, green, silver flecking absent, hairless; margins entire, not recurved, same colour as rest of blade; venation palmate, 3-nerved from base but rather obscure; base cuneate or rounded; tip acute. Umbel negatively geotropic, convex, of 15-40 flowers in loose ball. Corolla 10-15 mm wide, pale yellow; lobes ovate, about 5 mm long, 3-3.5 mm wide, strongly reflexed, shortly papillose. Corona pale yellow.  [H. parasitica Wight]

India, Indochina, Malesia

A variable species that requires revision. Often misidentified in cultivation.

Leaf blade rather obscurely palmately veined with 3 veins from base.

Source: Forster, P.; Liddle, D.; Liddle, I. (2002). Hoya. In: Spencer, R.. Horticultural Flora of South-eastern Australia. Volume 4. Flowering plants. Dicotyledons. Part 3. The identification of garden and cultivated plants. University of New South Wales Press.