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FOC | Family List | FOC Vol. 22 | Poaceae | Poa

16a. Poa sibirica subsp. sibirica

西伯利亚早熟禾(原亚种) xi bo li ya zao shu he (yuan ya zhong)

Culms 50–100 cm tall, 1–2 mm in diam. at lower nodes. Leaf sheaths shorter than internodes, uppermost 8–18 cm, 1.5–4 × longer than blade; ligule (0.5–)1–2.7 mm, abaxially scabrid; blade 1.5–4(–5) mm wide, uppermost to 10 cm. Panicle loosely contracted to open, ovoid to pyramidal, 4–15 cm, longest internodes 1–2.5(–3) cm. Spikelets 2–5-flowered; lower glume 2–2.5 mm, upper glume 2.5–3 mm; lemmas 2.5–3.8 mm. Anthers 1.5–2.5 mm. Fl. and fr. Jun–Jul. 2n = 14.

Forest margins, meadows among thickets, grassy places on slopes in river valleys, subalpine meadows; 1700–2800 m. Hebei, Heilongjiang, Jilin, Liaoning, Nei Mongol, Shanxi, Sichuan, NW Xinjiang, Yunnan [Kazakhstan, Korea, Kyrgyzstan, Mongolia, Russia (Far East, Siberia); Europe (Russia to W of Ural Mountains)].

This subspecies is quite variable, but is readily distinguishable from other species over most of its range. Material from Sichuan, however, looks somewhat different and needs further study.


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