Hoya obscura C.M.Burton

Wiry twiner to several metres long, latex white. Leaf blade elliptic to obovate, fleshy, flat, up to 10 cm long and 4 cm wide, green and gold-brown, silver flecking absent, hairless; margins entire, not recurved, same colour as rest of blade; venation very prominent, penninerved, with 5 or 6 lateral veins; base cuneate or rounded; tip acute to acuminate. Umbel positively geotropic, concave, of 15-30 flowers in tight ball. Corolla 7-8 mm wide, pale pink; lobes triangular-ovate, about 4 mm long and 3 mm wide, strongly reflexed, shaggily papillose. Corona orange.

Philippines

Corolla 7-8 mm wide, pale pink; corona 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.