Spindly erect shrub (? rarely small tree) to 3 m tall; young branches glabrous (rarely densely pubescent). Leaves slightly anisophyllous; petiole up to 1.5(–4) cm long; lamina elliptic to slightly obovate (rarely broadly so), largest 10–19(–22)≈4–7.5(–14) cm, apex blunt or with an obtuse tip up to 1 cm long, glabrous or sparsely hairy on midrib above (rarely uniformly pubescent). Cyme up to 6 cm long; peduncle up to 5 mm long, glabrous; rachis glabrous or sparsely pubescent; bracts and bracteoles green or brownish, ovate to elliptic or oblong, acute to acuminate with straight tip, glabrous to sparsely pubescent or finely puberulous; bracts 9–20 mm long; pedicels 1–2 mm long, glabrous or sparsely puberulous; bracteoles 15–26 mm long. Sepals straw-coloured to greenish, tinged purplish in apical part, subglabrous to finely puberulous, midrib thickened at base; dorsal oblong, 26–38 mm long, 2–5-toothed at apex; ventral and lateral lanceolate to narrowly oblong, acute to cuspidate (rarely 2-toothed), ventral 23–32 mm long, lateral 19–26 mm long. Corolla limb white with red to purple guide lines; tube 11–13 mm long, band of hairs 3–4 mm below insertion of stamens; limb 18–23 mm long; lobes 5–6 mm long. Filaments 8–12 mm long, glabrous or finely glandular; anthers 5–6 mm long, lower half bearded, also with tuft of longer hairs at base. Capsule 17–21 mm long, finely glandular. Seed 6–7 mm long, with large distinct scales. Fig. 14: 1–11, p. 85.
