Poa binodis Keng fil. ex L. Liu

This species is similar to Poa sibirica, but differs in its grayish green coloration, stout roots (to 1.2 mm thick), 2-noded culms, and hispid leaves. It is known from only two gatherings.

Perennials, rhizomatous; shoots extra- and intravaginal. Plants grayish green. Culms erect, decumbent at base, loosely tufted, 40–80 cm tall, 1–2 mm in diam., smooth, nodes 2, 1 exserted. Leaf sheath pale, prominently keeled with a short ± leathery wing, smooth, lower ones hispidulous to pilulose, to 16 cm, 3–4 × as long as blade, uppermost closed for 2/3 of length, smooth, glabrous; blade folded with slightly inrolled margins, or involute, leathery, 4–10 cm × ca. 3 mm, surfaces smooth to sparsely scabrid, of tillers to 15 cm, abaxially somewhat reflexed hispid; ligule 1–2 mm, collar smooth, scabrid or hispidulous or ciliate. Panicle loosely contracted, 12–20 × 3–5 cm; branches ascending to spreading, 2 or 3 per node, slender, proximally smooth or scabrid along angles throughout, longest 3–9 cm with 10–17 moderately crowded spikelets in distal 1/2, pedicels 0.5–1 mm, terminal one ca. 2 mm. Spikelets pale, sometimes purplish near apex, (3.5–)4–7 mm, florets 3 or 4(–6); vivipary absent; rachilla internodes 0.5–1.5 mm, scabrid; glumes unequal, apex acute, keel scabrid, area between veins sparsely, minutely scabrid, lower glume 2–2.5 mm, 1-veined, upper glume 2.8–3.5 mm, 3-veined; lemmas (3–)3.5–4 mm, minutely bumpy and moderately scabrid from base, glabrous throughout, keel finely scabrid for most of length, prominently 5(–7)-veined, margins smooth, apex acute; callus glabrous; palea minutely bumpy between keels, hooks sparse or absent, keels scabrid in distal 1/3–1/2 (30–50 hooks per keel). Anthers ca. 2 mm. Fl. and fr. Jul–Aug.

W Sichuan.

* Ditch banks, grassy places on slopes; ca. 3800 m.

Poa binodis là một loài thực vật có hoa trong họ Hòa thảo. Loài này được Keng f. ex L.Liu mô tả khoa học đầu tiên năm 2002.

双节早熟禾（学名：Poa binodis）为禾本科早熟禾属下的一个种。