Wiry twiner to several metres long, latex white. Leaf blade elliptic, narrow-ovate, oblong, orbicular or ovate, fleshy to succulent, flat, up to 15 cm long and 12 cm wide, green, silver flecking absent, softly hairy or hairless; margins entire, not recurved, same colour as rest of blade; venation penninerved, with 5 or 6 lateral veins; base cordate, obtuse, cuneate or rounded; tip acute, acuminate or apiculate. Umbel negatively geotropic, convex, of 10-25 flowers in tight ball. Corolla 16-17 mm wide, cream with red underneath; lobes lanceolate-ovate, 5-10 mm long, 3-7 mm wide, more or less flat, shortly papillose. Corona cream. [H. keysii F.M. Bailey, H. bandaensis auct. in part, non Schltr., H. rotundifolia hort.]
Australia, New Guinea, Melanesia
Second probably only to H. carnosa in terms of being commonly cultivated.
Often misidentified in cultivation. A variable species with 4 other subspecies that are occasionally cultivated.
Corolla 16-17 mm wide; corolla red under corona.
Source: (2002). Hoya. In: . 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.