Allied to T. crispa, but differing by: Old stems up to 6 cm ø, bearing scattered pustular lenticels but lacking prominent tubercles. Leaves with a pair of hollow domatia present in axils of basal nerves on lower surface. Flowers with 6 petals. Drupes yellow, radiating from a subglobose carpophore 1 mm long on peduncle 5-7 mm; pericarp drying very thin; endocarp thinly bony, blackish grey, 7-9 by 5-6 mm, broadly elliptic in outline, rounded at base, slightly keeled at apex, with a weak dorsal ridge, surface papillose or almost smooth.
In Thailand, according to Dr. Bänziger, leaves form at the beginning of the rainy season (April-May) and persist until the end of the rainy season (Oct.-Nov.). Flowering begins mid-Dec. and lasts until mid-Febr., the individual plants remaining in flower for about one month. The flowers have a strong but pleasantly fragrant scent. Fruits appear from mid-Jan.In Christmas I. (see below) male flowers and leaves were collected in Dec. 1980 and between June and Sept. 1981.According to Dr. BÄNZIGER it is most common in Central Thailand in areas with a prolonged dry season of 4-6 months, although it also occurs in parts of S. Thailand with a rather wet climate; it often occurs in open areas, sometimes on an isolated tree, at altitudes up to about 400 m. The species is apparently absent from the northern parts of Thailand where low temperatures occur. KERR collected specimens from scrub-land, scrambling over bushes, and from wasteland around Bangkok.