Terminalia prunioides is a small, multi-stemmed or single-stemmed
deciduous tree that typically grows to a height of . The trunk can reach up to in diameter. The bark is pale grey to grey-black, deeply fissured, and fibrous. Long, smooth, arching branches spread outwards and downwards, and spines are occasionally present on the long branches. The short, rigid, often purplish twigs grow sharply outwards at right angles to the branches, giving the tree's silhouette a characteristically spiky appearance. The leaves are borne in
fascicles (clusters) on short, spur-like branchlets. The leaf blade (lamina) is
chartaceous (papery), broadly obovate to elliptic-obovate, measuring up to long and wide. The apex is rounded,
emarginate (notched), or
mucronate (with a short, sharp point), and the base is obtuse to
cuneate. Young leaves are densely covered with soft hairs (
pubescent) but become almost hairless (
glabrescent) as they mature. The leaves are dark green above and paler below, with 3–5 pairs of lateral veins that are somewhat impressed on the upper surface.The
petiole (leaf stalk) is long. The
inflorescences are slender, lateral spikes, long, borne at the ends of short branchlets. The flowers are small, starry, and cream or white in colour, with a strong, unpleasant smell. They lack petals, but have a conspicuous puff of yellow
stamens that are long. Each inflorescence contains both male and bisexual flowers, with the male flowers concentrated towards the apex. The fruit is a distinctive, winged
samara (a type of dry, indehiscent fruit) that is elliptic-oblong in outline, long and wide. When mature, it is a striking purplish-brown, plum-coloured, or deep red, which is the origin of its common name. The apex is obtuse, deeply
emarginate, or
mucronate. The single seed is contained within a hard, woody
endocarp in the thickened centre of the fruit, surrounded by a tough, flat wing. ==Distribution and habitat==