Monosis volkameriifolia (Wall. ex DC.) H. Rob. & Skvarla

Small tree, 3–6 m tall. Stems erect, bark grey, young branches inconspicuously ribbed, white tomentose. Leaves alternate, 10–50 by 5–20 cm, obovate or oblanceolate, margin serrate, apex acute, base cuneate, coriaceous; upper surface whitish puberulous, without glands; lower surface whitish puberulous with flagellate hairs and capitate glands; lateral veins 10–20-paired; petioles up to 3 cm long. Capitulescences terminal, thyrsoid paniculate. Capitula campanulate, 9–10 mm long, subsessile or shortly pedunculate. Receptacle flat, 1.5–2 mm in diam., glabrous. Involucres narrowly campanulate or slightly oblong-cylindrical, in 4–5 series. Phyllaries imbricate, light green or purple apically, 4–5 mm long, 2–3 mm in diam., margin piliferous or entire, outer surface white arachnoid without glands; the outer and the middle ones ovate, apex acute; the inner ones ovate or lanceolate, apex acute. Florets 8–10; corollas funnelform, purple, glandular; corolla tubes 5.5–6 mm long; corolla lobes 2–3 mm long. Anthers 3–3.5 mm long, apical appendage acute, base acute. Styles purple, 5–7 mm long, branches 2, 3–4 mm long. Achenes turbinate, 4–5 mm long, 10-ribbed, covered with dense twin hairs and capitate glands. Pappus in 2 series of bristles, the inner ones 7–8 mm long.

Thailand: Mae Hong Son, Chiang Mai, Lamphun, Lampang. China (Yunnan), India, Bhutan, Myanmar, Vietnam.