Strobocalyx solanifolia (Benth.) Sch. Bip.

Scandent or climbing shrubs, 2–10 m tall. Stems caulescent, becoming woody with age, young branches inconspicuously ribbed, ferruginous tomentose. Leaves 8–20 by 4–10 cm, ovate or elliptic, margin serrate or entire, apex acute or acuminate, base cuneate, subcoriaceous; upper surface puberulous without glands; lower surface tomentose with filiform hairs, flagellate hairs and capitate glands; lateral veins 5–7-paired; petioles up to 3.5 cm long. Capitulescences terminal and axillary, thyrsoid paniculate. Capitula narrowly campanulate, 8–10 mm long, pedunculate. Receptacle flat, 2–2.5 mm in diam., hairy. Involucres narrowly campanulate or slightly cylindrical, 2–3 series, 3.5–4 mm long, 3–4 mm in diam. Phyllaries imbricate, light green, margin piliferous, outer surface tomentose without glands; the outer and the middle ones ovate, apex obtuse; the inner ones obovate, apex obtuse. Florets 5–7; corollas funnelform, purple, puberulous, glands capitate; corolla tubes 4.5–6 mm long; corolla lobes 1.5–2.5 mm long. Anthers 2–2.5 mm long, apical appendage acute, base acute. Styles purple, 5–6.5 mm long, branches 2–2.5 mm long. Achenes turbinate, ca. 2 mm long, 10-ribbed, covered with sparse hairs and capitate glands. Pappus in 2 series of bristles, the inner ones 5–6 mm long. Pollen echinate, 3-colporate, with prominent micropuncta.

Thailand: Mae Hong Son, Chiang Mai, Nan, Lampang, Phitsanulok, Phetchabun, Loei, Sakon Nakhon, Chaiyaphum, Nakhon Ratchasima, Kanchanaburi, Nakhon Nayok. Hong Kong, Myanmar, Vietnam, Laos, Myanmar.