Origin and Habitat: Hoya davidcummingii comes from the Philippines and it was published in 1995. It has previously been incorrectly sold as Hoya gracilis. Type locality: Bulusan Volcano National Park in Sorsogon Province (Luzon, Philippines). Habitat and ecology: It grows along forest edges.
ENGLISH:Wax Plant, Porcelain Flower, Wax Flower
Description:Hoya davidcummingii is a small climbing perennial herbaceous hoya with amazingly attractive rose-red perfumed flowers with yellow centers. Usually it starts blooming at an early age and flowers are produced through-out the year. It has previously been incorrectly sold as Hoya gracilis. Derivation of specific name: The species name honors the Australian hoya collector David Cumming. Stems: Thin, wiry about 2 mm in diameter with small aerial roots formed just below the nodes that helps the plant rooting in the substrate. Internodes about 3 to 4 cm apart. Leaves: Thick, small, always opposite. Petiole ca.1 cm long. Lamina smooth, oblong, elliptical and pointed, about 4-6(-10) cm long and 1.5-2(-2.5) cm wide, concolour, above dark green with darker edges and the underside is lighter green. Inflorescence: With10-15(-20) flowers in a hemispherical umbel. Peduncle approximately 2 cm long, green, smooth and glabrrous. This hoya do not drop the peduncle after flowering and it often flowers from the same peduncle again. Flowers: Hermaphrodite, radially symmetrical, mostly flat, pentamerous, and each flower is about 8-9(-20) mm in diameter. The corolla is purple or pink and the corona is yellow with a red centre. The edges of the petals are sometimes a little reflexed (bent downward) when first opening, and often become strongly bent as they ages. It produces little nectar and the fragrance can be described as caramel like. Blooming: Even though this hoya isn't all that easy to grow, it certainly flowers often and willingly and there always seems to be new ones on the way all the time. It even flowers during the winter. Flowers stay open about 5 days.
