Hoya callistophylla
A Bornean climbing epiphyte grown for its long, thick leaves with striking dark veins, described by Ted Green in 2000 from a plant collected near Nabawan in Sabah. Almost nothing is published about its wild habitat, and there are no usable wild records, so the conditions below come from the single measured site, which has a perpetually warm, saturated, very wet equatorial climate, and from general knowledge of Bornean forest hoyas. Grow it warm and humid in bright filtered light, in an airy mix that never stays soggy.
Where it grows wild
A climbing epiphyte (Kew describes it as a liana) of wet tropical rainforest in Borneo. The type came from Nabawan in interior Sabah and was described from a plant cultivated in Hawaii; the type locality was first given as Bau, Sarawak, and later corrected. No field notes on its host trees, light exposure or elevation have been published beyond this.
Unknown from wild records. Nabawan lies in the interior of Sabah at a few hundred metres, which suggests lowland to low hill forest, but this is an inference.
🔒 Growing it like that
The wild conditions above, turned into targets for a shelf, a tent or a greenhouse. The full profile has:
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Profiles are drafts built from measured range and climate and from published sources; each section carries its own confidence in the app. Photo from Wikimedia Commons, used under its CC BY 4.0 licence, unmodified.