This one is also has been sold as Hoya wallichii for a long time and also appears in circulation as Hoya campanulata although Hoya cystiantha is considered to be the true species by some. They are not synonymous. Published with its current name in 2009.
Hoya danumensis has large, dark green leaves approx. 15x7 cm size. Visible venetion that appears to be slightly sunk into the leaves. Thick stem, about 3-5mm.
At first it looks like a bush that doesn't twine or climb. Once established it starts growing fast and puts out long branches that will twine around everything.
Large flowers, approx ca 3-4 cm in diameter. Slightly scented and produces little nectar.
Should not be exposed to sunlight.. A shaded window facing west or east is good.
Should not be allowed to go dry. Keep slightly moist at all times.
Intermediate species. Tolerates short exposure to temperatures no less than 10°C. Best grown in a regular room temperature of 20-25°C.
Flower size: ca 4 cm Ø
Leaf size: ca 5-7 cm × 10-15 cm
Origin: Indonesia, Malaysia
Author: M. Rodda and T. Nyhuus
Publication: Webbia 64(2) 163-167 (2009)