Ophiorrhiza australiana subsp. heterostyla Halford
Halford, D.A. (1991) Austrobaileya 3(3): 372. Type: Queensland, Massey Gorge, c. 23 km NW of Silver Plains Station, 13 50 S, 143 24 E, 9 Nov.1980, J.R.Clarkson 3619; holo: BRI; iso: QRS.
Australian snake root
Occasionally grows into a shrub 1 m tall but usually flowers and fruits when much smaller.
Terminal buds and young shoots clothed in brownish hairs. Leaf blades about 5-16 x 2-5.5 cm. Midrib and lateral veins sparsely clothed in pale coloured hairs on the underside of the leaf blade. Petioles of moderate dimensions usually 1-2 cm long. Stipules broad at the base but ending in one or two aristate tips.
Inflorescence short, 3-6 branched, about 1-5 cm long with about 10-20 flowers per branch. Calyx tube (hypanthium) about 1-1.5 mm long, calyx lobes about 0.7-1.5 mm long. Corolla tube about 2.5-4.0 mm long, lobes about 1-2 mm long, inflexed or hooked at the apex. Corolla tube densely hairy at the orifice, hairs straight and appressed. Anthers about 1 mm long. Style inserted in a bilobed yellow glandular disk at the apex of the ovary.
Features not available.