Hoya micrantha Hook.f.

Wiry twiner to several metres long, latex white. Leaf blade elliptic to oblanceolate, fleshy to succulent, flat, up to 18 cm long and 5 cm wide, dark-green, silver flecking absent, hairless; margins entire, not recurved, same colour as rest of blade; venation penninerved, with 4 or 5 lateral veins, rather obscure; base cuneate; tip acute to acuminate. Umbel positively geotropic, concave, of 1-25 flowers in tight ball. Corolla about 8 mm wide, pale yellow to orange; lobes ovate, 4-5 mm long, 4-5 mm wide, strongly reflexed, shortly papillose. Corona pale yellow to orange.

Burma, Thailand, Malaysia

Corolla about 8 mm wide, pale yellow; corona pale yellow to orange.

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.

kingdom Plantae
phylum   Tracheophyta
class    Magnoliopsida
superorder     Asteranae
order      Gentianales
family       Apocynaceae
genus        Hoya R.Br.