Acilepis tonkinensis (Gagnep.) H. Rob. & Skvarla

Perennial herbs, 1–1.5 m tall. Stem erect, inconspicuously ribbed, villose. Leaves alternate, 5–10 by 1.5–4 cm, elliptic or obovate, margin serrate, apex acute, base cuneate or truncate, subcoriaceous; upper surface scabrous, lower surface pilose glandular; lateral veins 6–11-paired; petioles up to 5 mm long. Capitulescences terminal, paniculate. Capitula campanulate, 9–12 mm long, pedunculate. Receptacle flat, hairy. Involucres broadly campanulate, in 5–6 series, 8–10 mm long, herbaceous. Phyllaries purple, outer surface arachnoid, glands capitate; the outer and the middle ones ovate, apex acute; the inner ones ovate-lanceolate to oblong, apex apiculate. Florets ca. 20; corollas funnelform, purple, glandular; corolla tubes ca. 5 mm long; corolla lobes ca. 4 mm long. Achenes subterete, ca. 3 mm long, 10-ribbed, pubescent with twin hairs and capitate glands. Pappus bristles, the inner ones 8–9 mm long.

Thailand: Chiang Mai. Vietnam.