Subspecies, varieties, forms and cultivars of plants belonging to the Hoya pubicalyx group

• Hoya pubicalyx Merr.
• Hoya pubicalyx cv. Red Button: Flowers are wine red to dark purple, velvety, coated with translucent hairs, corona red.
• Hoya pubicalyx cv. Royal Hawaiian Purple: clusters with pink-red flowers and also on the same plant you might see clusters that are almost black. Some of the clusters are even mixed pink-red and black.