Hoya heuschkeliana Kloppenburg is an interesting an interesting and unusual Philippine Hoya. It has round urn-shaped flowers. Since there is only one Hoya with such urn-shaped flowers, it was placed in its own group by Kloppenburg in 1993, the group Skenostemma. Such a flower shape can easily confused with those belonging to the genus Dischidia, where urn-shaped or tubular flowers are normal. Since the leaves are rather small, round and succulent, also the vegetative appearance of H. heuschkeliana is more similar to Dischidia than to most of the Hoya species. From the evolutionary point of view, the flower form is a derived character of the genus Hoya. Some suspect that H. heuschkeliana may be a natural hybrid between between Hoya and Dischidia.
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The genus was named in Modern Latin in honor of English gardener and botanist Thomas Hoy (c. 1750-1822).
Hoya heuschkeliana
Hoya heuschkeliana comes in a ⌀ 6 cm pot and is ca. 12 cm tall
