Leaves 1.5–9(10) ? 1–6(8) cm, ovate to ovate-oblong, obtuse to subacute and sometimes mucronate at the apex, rounded to subtruncate at the base; lamina with 5(7) principal longitudinal veins from the base, glabrous above, usually shortly pilose on the veins below, sometimes sparsely so; veins prominent below; petioles 2–10(13) mm long, shortly pilose.
Flowers solitary in leaf axils, rarely 2(3?), or in short racemose inflorescences; pedicels (including ovary) 8–15 mm long, puberulous to shortly pilose; bracts leaf-like, 4–12 ? 1.5–7 mm, ovate to elliptic or lanceolate, acute at the apex, rounded to cuneate at the base, ± glabrous above, shortly pilose mainly on veins below, sometimes sparsely so.
Fruit a 6-ribbed capsule, 1.5–2.7 ? 1–1.8 cm, oblong-pyriform, apex rounded, base attenuate into stipe 3–7 mm long, sparsely pilose mainly along ribs to glabrous; the mature capsule and stipe split longitudinally into 6 segments which remain joined to the pedicel by the elements of the stipe.
Seeds 5–6.5 ? 3.5–5 mm, triangular with rounded corner and curled margins (in dried state at least), creamy-yellow, smooth with thick cuneate raphe down middle of one side sometimes ± equalling the seed in width.
Stems trailing, up to c. 40 cm long, usually sulcate and angular (in dried state at least), puberulous to shortly pilose, sometimes sparsely so.
Perennial herb with annual stems from a woody or fleshy rootstock.
Gynostemium 2–3 mm tall, anthers 6.