长耳灯心草 chang er deng xin cao

Plants perennial, 6--11 cm tall. Rhizome short. Stems terete, 0.8--1 mm in diam. Basal leaves 1--3, cauline leaves 2; leaf sheath auricles well developed, acuminate to slightly obtuse, 1.4--1.7 mm; leaf blade 1--5 cm × 0.5--0.7 mm, perfectly septate, striate. Inflorescences terminal, sparingly branched; involucral bract leaflike, shorter than inflorescence; heads 3--7, 4--7 mm in diam., 3--5(--7)-flowered; bracts 2.5--3 × 0.9--1.3 mm, apex acute. Perianth segments lanceolate, ca. 3 × 1 mm, subequal, veins 3, margin scarious, apex acute. Stamens 3; anthers ca. 0.9 mm, ca. 3/5 as long as filaments. Ovary trigonous oblong, 1-loculed. Stigmas usually curved, ca. 1.2 mm. Capsule chestnut brown, 3--3.5 mm including persistent style, apex tapered into a short beak. Seeds ca. 0.6 mm, longitudinally striate. Fl. May--Jun, fr. Jul--Aug.

* Trail sides on slopes; ca. 2500 m. Yunnan.