Acilepis silhetensis (DC.) H. Robinson

Perennial herbs, 1–3 m tall. Stems erect, inconspicuously ribbed, pilose. Leaves 7–12 by 2–4 cm, lanceolate or oblanceolate, margin serrate, apex acute or acuminate, base attenuate, subcoriaceous; both surfaces scabrous with whip-shaped hairs and capitate glands; lateral veins 5–10-paired; petioles up to 1 cm long. Capitulescences terminal, paniculate or solitary. Capitula campanulate, 15–20 mm long, pedunculate. Receptacle flat, 6–10 mm in diam., hairy. Involucres in 6–7 series, 11–18 mm long, 10–15 mm in diam., herbaceous, campanulate. Phyllaries dark purple or green with purple apex, margin piliferous, outer surface arachnoid lacking glands; the outer and the middle ones ovate, apex acuminate, upper half strongly reflexed; the inner ones ovate-lanceolate to oblong, apex acuminate or aristate. Florets 50–75; corollas funnelform, purple, glandular; corolla tubes 8–12 mm long; corolla lobes 3.5–5 mm long. Anthers 3.5–4.5 mm long, apical appendage acute, base obtuse. Styles purple, 10–12 mm long, branches 3.5–4.5 mm long. Achenes subterete, 4–5 mm long, 10-ribbed, glandular. Pappus bristles, the inner ones 6.5–8 mm long.

Thailand: Mae Hong Son, Chiang Mai, Lamphun, Lampang, Phetchabun, Loei, Khon Kaen. China, India, Bhutan, Myanmar, Laos, Myanmar.