2. Stephanachne pappophorea (Hackel) Keng, Contr. Biol. Lab. Chin. Assoc. Advancem. Sci., Sect. Bot. 9(2): 136. 1934.
冠毛草 guan mao cao
Calamagrostis pappophorea Hackel, Annuaire Conserv. Jard. Bot. GenΦve 7–8: 325. 1904; Pappagrostis pappophorea (Hackel) Roshevitz.
Perennial, forming dense tussocks from a short rhizome, base invested in old leaf sheaths. Culms erect, 10–40 cm tall, 1–1.3 mm in diam., smooth, 2–5-noded. Leaf sheaths tight, auriculate, auricles 2–5 mm; leaf blades flat or involute, 5–25 cm, 1–5 mm wide, both surfaces scabrid, apex finely acuminate; ligule 1.5–3 mm, lacerate. Panicle linear-oblong in outline, spikelike, not interrupted, 4–18 cm, slightly shining; branches almost smooth; pedicels 0.5–2.5 mm, puberulent. Spikelets 5–7 mm, yellowish green; glumes narrowly lanceolate, 1–3-veined, midvein scabrid, apex slenderly acuminate; lemma 3–4 mm (including lobes), body appressed-pilose, apical lobes extended into ca. 0.5 mm mucros, circlet of hairs 3–4 mm; awn 6–8 mm, weakly geniculate near middle, column slightly twisted; palea slightly shorter than lemma. Lodicules 2 or 3, ca. 1 mm. Stamens 3, anthers 1–1.2 mm. Fl. and fr. Jul–Sep.
Dry stony mountain slopes, steppes, dried floodlands, roadsides; 1800–3200 m. Gansu, Nei Mongol, Qinghai, Xinjiang [Mongolia, Tajikistan].