Description from
Flora of China
Arenaria subpilosa (Hayata) Ohwi; Cerastium taiwanense T. S. Liu.
Herbs perennial. 15--40 cm tall. Stems slender, somewhat prostrate, pilose. Leaves sessile, linear-lanceolate, 3--4.5 cm × 3--4 mm, adaxially aristate pilose, abaxially subglabrous, base attenuate, margin remotely ciliate, apex acute. Cyme terminal, lax. Pedicel slender, 1--3 cm, pubescent. Sepals ovate-oblong, 2--4 × 1--1.5 mm, margin ciliate, apex obtuse. Petals spatulate, ca. 2 × as long as sepals, base attenuate, apex rounded, entire. Ovary 1--1.5 mm. Styles 4 or 5. Capsule cylindric, 3--4 × 2--2.5 mm, 8--10-toothed. Seeds brown-red, oblong-globose, slightly compressed, ca. 1 mm, tuberculate.
* Mountains; 3000--3900 m. C Taiwan.