Hoya pubicalyx Merr.

Wiry twiner to several metres long, latex white. Leaf blade elliptic to oblanceolate, fleshy, flat, up to 14 cm long and 5 cm wide, green, silver flecking present, hairless; margins entire, not recurved, same colour as rest of blade; venation penninerved, with 6 or 7 lateral veins, rather obscure; base cuneate or rounded; tip acute or acuminate. Umbel negatively geotropic, convex, of 15-40 flowers in tight ball. Corolla 17-19 mm wide, pink-purple to red-black; lobes oblong-ovate, 7-8 mm long, 5-6 mm wide, slightly reflexed, shaggily papillose. Corona cream-pink to pinkpurple. [H. purpureo-fusca authorities not Hook.]


This species is often misidentified in cultivation.

A number of clones are in cultivation. Some have cultivar names, others do not.

Corolla pink-purple to red-black, shaggily papillose; corona creampink to pink-purple.

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.

Hoya pubicalyx 'Hawaiian Royal Purple'

Corolla red-black; corona pink-purple.

Larger flowers than 'Red Buttons'.

Hoya pubicalyx 'Red Buttons'

Corolla red-black; corona pink-purple.

Smaller flowers than 'Hawaiian Royal Purple'.

Hoya pubicalyx 'Silver Leaf'

Corolla pink-purple; corona cream-pink.

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