Ophiorrhiza australiana Benth. subsp. australiana
Halford, D.A. (1991) Austrobaileya 3(3): 370.
Usually flowers and fruits as a shrub about 1 m tall but also flowers when smaller.
Terminal buds and young shoots clothed in brownish hairs. Leaf blades very variable in size but up to about 12 x 4 cm with about 6-15 lateral veins. Midrib and lateral veins very obvious on the underside of the leaf blade because their outline is accentuated by a covering of brownish hairs. Petioles rather long and slender up to about 3-4 cm. Stipules +/- broadly triangular at the base but ending in 1 or 2 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 disk at the apex of the ovary.
Cotyledons small, orbicular, about 1-2.5 x 1-2.5 mm. First pair of leaves simple, upper surface with a few bristle-like hairs. At the tenth leaf stage: leaf blade about 60 x 25 mm, clothed in curved, +/- erect pale hairs on both the upper and lower surfaces. Petiole about 4-5 mm long. Stipules interpetiolar, about 4-7 mm long, broad at the base but with a long terete apex. Seed germination time 22 to 411 days.