Gymnosporia inermis Merr. & L.M.Perry
Merrill, E.D. & Perry, L.M. (1939) Journal of the Arnold Arboretum 20: 335. Type: New Guinea.
Usually flowers and fruits as a shrub or scandent shrub 1-3 m tall but occasionally grows into a tree-top vine. Vine stem diameters to 6 cm recorded.
Leaf blades about 30-80 x 15-45 mm, produced in a tight spiral or whorl on short burr-like shoots along the twigs. Petioles about 2-4 mm long, grooved on the upper surface. Teeth occur all along the margin of the leaf blade but the teeth are small and inconspicuous. Twigs often longitudinally ribbed or lined, sometimes with spines in the leaf axils.
Cotyledons elliptic, about 9-10 x 6-7 mm, lateral veins not obvious. First pair of leaves simple, stipulate, margins serrate. At the tenth leaf stage: leaf blade margin toothed with about 12 teeth on each side, midrib raised on the upper surface. Stipules about 1 mm long. Stem +/- 4-angled. Spines sometimes present in the leaf axils. Seed germination time 49 to 79 days.
This species has been used medicinally in India and Africa. Cribb (1981).