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Monosis wightiana DC., Contr. Bot. India [Wight]: 5. 1834.
Perennial plants. Stems small trees or shrubs, young branches terete, tomentose. Leaves simple, alternate, petiolate, pubescent with flagellate hairs, lamina ovate, obovate, oblanceolate or elliptic, margin serrate, apex acute, base attenuate or cuneate, subcoriaceous. Capitulescences terminal, thyrsoid paniculate. Capitula discoid, homogamous, pedunculate, florets bisexual and fertile. Involucre campanulate, in 4–5 series, 4–5 mm long. Phyllaries imbricate, persistent, without glands. Corollas funnelform, purple, actinomorphic, corolla lobes 5. Anthers 5, syngenesious. Styles 2-branched, inner surface covered with stigmatic papillae, outer surface covered with sweeping hairs on the outer surface reaching below style bifurcation. Achenes turbinate, 10-ribbed, carpopodium present, hairy with glands. Pappus in 2 series of bristles, persistent, the outer ones are shorter than the inner ones. Pollen lophate with high muri.
Two species are recognized in Thailand.