Description from Flora of China
Mattia himalayensis Klotzsch, Bot. Ergebn. Reise Waldemar 94, t. 64. 1862; Paracaryum himalayense (Klotzsch) C. B. Clarke.
Herbs annual, densely minutely hispid. Stems erect, usually branched, 20-30 cm tall. Basal leaves oblong-oblanceolate to spatulate, 5-9 × 0.5-1.5 cm, pubescent, base attenuate, margin entire, apex obtuse; stem leaves sessile, smaller. Inflorescences terminal and axillary, elongated in fruit. Flowers subsessile. Calyx lobes elliptic, ca. 2.5 mm, slightly fleshy, exterior and margin pubescent. Corolla pale ?yellow-white; tube ca. as long as calyx; throat appendages trapeziform; limb somewhat shorter than tube; lobes suborbicular, ca. 1.5 mm wide. Anthers oblong, ca. 0.9 mm. Ovary lobes 1-3 developed. Style ca. 0.9 mm; stigma obscure. Nutlets suborbicular-ovate, ca. 7 mm, winged, with sparse short glochids, marginal wing ca. 0.8 mm wide.
Gravelly slopes. W Xizang [Afghanistan, NW India, Kashmir, Pakistan].