Hoya australis subsp. tenuipes (K.D.Hill) P.I.Forst. & Liddle
Forster, P.I. & Liddle, D. (1991) Austrobaileya 3(3): 512.
A slender vine not exceeding a stem diameter of 2 cm.
Twigs, petioles and leaves produce a milky exudate. Leaf blades thick and fleshy, about 5-10 x 3-6 cm, petioles about 1-3.5 cm long. Colleters (small finger-like glands) present on the upper surface of the midrib near its junction with the petiole. Venation difficult to discern but lateral veins appear to form loops inside the blade margin.
Inflorescence an umbelliform raceme on a stout peduncle about 25 mm long. Flowers about 10-11 mm diam., pedicels about 25 mm long. Calyx lobes narrowly triangular, about 3 mm long. Corolla tube about 3 mm long, corolla lobes recurved, about 6.5 mm long. Stamens fused to form a staminal column about 3 mm long. Anthers with a terminal appendage about 0.8 mm long. Pollen aggregated in pollinia, 2 in each anther. One pollinium of each anther is joined to a pollinium in the adjacent anther by means of a translator. Pollinia about 0.8 mm long. Style head about 1.5 mm long.