垂果亚麻 chui guo ya ma

Linum baicalense Juzepczuk.

Perennials 20-40 cm tall. Roots with a taproot. Stems several, erect, base woody and with scalelike leaves, branched above middle, nonflowering shoots rudimentary. Cauline leaves alternate, linear to linear-lanceolate, 1-2.5 cm × 1-3 mm, glabrous, 1-veined from base, margin slightly revolute. Flowers numerous in cymes, ca. 2 cm in diam. Pedicel slender, nodding in fruit. Sepals ovate, 3-5 × 2-3 mm, base 5-veined, margin membranous, apex acute. Petals blue to bluish purple, obovate, ca. 1 cm, base cuneate, apex rounded. Stamens ± as long as styles. Styles distinct. Capsule subglobose, 6-7 mm in diam., septicidal. Seeds oblong, ca. 4 × 2 mm. Fl. Jun-Jul, fr. Jul-Aug.

Sandy grasslands, dry mountain slopes; 600-4000 m. Gansu, Heilongjiang, Jilin, Nei Mongol, Ningxia, Shaanxi, S Xizang (Yadong) [India (Sikkim), N Mongolia, Russia (E Siberia)].