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Poa nankoensis Ohwi


Description from Flora of China

Perennials, tufted. Culms ascending, 10–20(–40) cm tall, 0.8–1 mm in diam., smooth, nodes 3–5, none exserted. Leaf sheaths smooth, glabrous, several times longer than internodes, 5–8 cm, 1–3 × as long as blade, uppermost closed for 3/10–1/3 of length; blade flat or folded, thickly papery, 2–8 cm × 1.5–3 (–4) mm, abaxially smooth, adaxially and margins smooth to sparsely scabrid, apex acute to acuminately prow-tipped, of tillers to 16 cm; ligule 1–2(–3) mm, abaxially smooth or sparsely scabrid, apex obtuse to acute, collar glabrous. Panicle open, slightly included to exserted, 5–13 cm, longest internodes 2–3 cm; branches ascending to spreading, 1 per node, rounded, distally sparsely scabrid, longest 3–4 cm with 10–16 spikelets in distal 2/3. Spikelets green, (4–)5–6 mm, florets 2–3(–4); vivipary absent; rachilla internodes ca. 0.5 mm long, smooth, glabrous; glumes subequal, smooth, lower glume 3.5–4 mm, 1-veined, upper glume 3.5–5 mm, 3-veined; lemmas lanceolate, firm, 4–5 mm, apex acuminate, keel villous for 3/4 of length, marginal veins for 1/2, intermediate veins faint to moderately prominent, areas between veins minutely bumpy; callus densely webbed; palea distinctly shorter than lemma, minutely bumpy between keels, keels scabrid. Anthers 0.8–1 mm. Fl. and fr. Jun–Aug.

* Alpine grassy places. Taiwan.


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