Tylophora williamsii P.I.Forst.

Forster, P.I. (1992) Australian Systematic Botany 5(1): 36. Type: Queensland, Lochwall Station, Lolworth Creek, iv.1978, H.Marsh [AQ269212]; holo: BRI.

Vine stem diameters to 3 cm recorded.

Twigs, petioles and leaves produce a milky exudate. Leaf blades about 3-8 x 2-4 cm, petioles about 1-1.8 cm long. Usually two colleters (small finger-like glands) visible on the upper surface of the midrib near its junction with the petiole. A line of glands or hairs usually present on the twigs between the petiole bases.

Inflorescence up to 5.5 cm long arising beside the petiole bases and each inflorescence consists of 3 or 4 fascicles or umbels. Pedicels about 8-10 mm long. Flowers about 6-7 mm diam. Calyx lobes triangular, about 1.5 mm long, translucent glands visible near the base on the inner surface of the calyx. Corolla lobes about 4-5 mm long. Pink or reddish glands alternating with the corolla lobes. Stamens fused to form a staminal column and corona. Anthers about 1 x 0.75 mm. Pollinia waxy. Carpels about 1-1.5 mm long. Ovules numerous in each carpel.

Follicles fusiform-ovoid, about 5-5.5 cm long. Fide Forster (1996).

Features not available.

Endemic to Queensland. Occurs in CYP, NEQ and CEQ. Altitudinal range from near sea level to 450 m. Grows in rain forest and gallery forest.