耐国蝇子草 nai guo ying zi cao

Melandrium integripetalum L. H. Zhou in C. Y. Wu, Fl. Xizang. 1: 715. 1983, not Silene integripetala Bory & Chaubard (1832).

Herbs perennial, 8--15 cm tall. Root crowns slender, multibranched. Stems clustered, densely glandular villous. Cauline leaves 4 or 5 pairs, oblanceolate, 1.5--4 cm × 5--8 mm, both surfaces densely glandular hairy, base cuneate, attenuate into petiole, apex obtuse or mucronulate. Flowers 1--4. Pedicel 1.5--10 mm, densely glandular hairy; bracts lanceolate, glandular hairy. Calyx campanulate, 1.3--1.5 cm, glandular hairy; longitudinal veins 10, violet, cohering at apex, densely glandular hairy; calyx teeth triangular, margin membranous, ciliate. Androgynophore short. Petals slightly exserted beyond calyx, ca. 1.5 cm; claws narrowly cuneate, glabrous; limbs pale violet, flat-orbicular, margin nearly entire; coronal scales square. Stamens included; filaments glabrous. Styles linear, ca. 5 mm. Capsule not seen. Fl. Aug.

* Grasslands; ca. 5000 m. S Xizang (Lhasa Shi).

This species differs from Silene nigrescens in its less divided petals and different habitat requirements.