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Perennial. Culms erect, densely tufted, 40–100 cm tall, slender or stout. Leaf sheaths glabrous or scattered pubescent; leaf blades 20–35 cm, lower leaves inrolled, 2–3 mm wide, upper leaf blades flat, 2–3 mm wide, glabrous or scattered pubescent, apex acuminate; ligule ca. 2 mm. Panicle erect, 10–20 cm, contracted; branches obliquely ascending, each bearing 1–4 spikelets; pedicels as long as or shorter than spikelets. Spikelets lanceolate-oblong, ca. 15–25(–30) mm, florets 5–12; rachilla internodes ca. 2.5 mm; lower glume 7–12 mm, 1–3-veined, upper glume 8–14 mm, 3-veined; lemmas 10–12 mm, glabrous or sometimes hairy, 7-veined, margins inrolled when mature; awn (1–)2–6 mm, slender, straight; palea slightly shorter than lemma. Anthers 4–7 mm. Fl. May–Jul. 2n = 28, 56, 70.


Creative Commons Attribution Non Commercial Share Alike 3.0 (CC BY-NC-SA 3.0)

© Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA

Source: Missouri Botanical Garden

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