Hoya australis R.Br. ex J.Traill subsp. australis
Hill, K.D. (1989) Telopea 3(2): 250.
Wax Flower; Common Hoya; Native Hoya; Hoya, Native; Hoya, Common; Hoya
Climbs mainly by adventitious roots. 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 2.4-8 x 1.8-4.5 cm, petioles about 0.6-2 cm long. Colleters (small finger-like glands) present on the upper surface of the midrib near its junction with the petiole. Upper and lower leaf blade surfaces clothed in hairs.
Cotyledons elliptic to ovate, about 8 x 4 mm, petioles about 1 mm long. First pair of true leaves ovate, about 15 x 10 mm. At the tenth leaf stage: leaf blade elliptic, about 7 x 4 cm, apex acuminate, base obtuse, petiole about 1.5 cm long. Finger-like glands visible on the upper surface of the midrib close to its junction with the petiole. Lateral veins about 5-8 on each side of the midrib, forming loops inside the blade margin. Petioles and stems sparsely clothed in short hairs. Seed germination time 6 days.
A food plant for the larval stages of the Australian Crow and Eichhorn's Crow Butterflies. Common & Waterhouse (1981).
This species may cause problems with cattle in droughts. If they consume too much material of the species, the spinal cord is damaged and they will collapse and may die.
Sometimes grown in hanging baskets for the showy heads of strongly perfumed white flowers.