Hoya coronaria Blume

This hoya comes from the mountains of Java, southern Thailand, Sumatra, Borneo and Sulawesi and it was described in 1826.

It's a hoya best suited for climbing and it belongs to the eriostemma group. The hoyas in this group need plenty of sunshine to flower. The leaves are medium sized to large, about 8-11 cm long and 4-6 cm wide. The leaves are almost oblong and pubescent, more on the underside than on the top. The most prominent vein is the center vein, but all veins are visible.

It's difficult to get the eriostemmas to flower, but if you succeed with coronaria you will get green/yellowish flowers with the corolla lobes slightly curved back. The corona is darker yellow. There are few flowers in each umbel and the flowers are about 3 cm each. I've read that these flowers last long and have a nice fragrance, but there was no description of the fragrance.