阿诺早熟禾 a nuo zao shu he

Basionym: Poa arnoldii Melderis in H. Hara et al., Enum. Fl. Pl. Nepal 1: 142. 1978; P. mustangensis Rajbhandari.

Culms 5–15(–25) cm tall. Leaf sheath usually smooth; blade flat, 1–2 mm wide, abaxial surface glabrous, adaxial surface scabrid; ligules 2.3–3 mm. Panicle loosely spreading, 4–6 cm; branches paired, lowermost 1–2 cm. Spikelets 4–4.5 mm, florets 2, upper floret viviparous; lemma elliptic-oblong, keel and marginal veins proximally villous, areas between veins usually proximally shortly pubescent; callus glabrous.

Alpine grassy places; 4000–5600 m. Gansu, Qinghai, Xizang [Nepal].

Viviparous spikelets are very rare within Poa sect. Stenopoa and are restricted to taxa closely allied to P. glauca or which have originated through hybridization with that species. Poa mustangensis, which was described from neighboring Nepal, seems not to be separable from this subspecies.