Avena abietetorum Ohwi, Acta Phytotax. Geobot. 2: 162. 1933 ["abietorum"], emend. Ohwi, J. Jap. Bot. 17: 441. 1941; Helictotrichon hideoi (Honda) Ohwi subsp. abietetorum (Ohwi) T. Koyama.

Perennial. Culms tufted, erect, 20–45 cm tall, 1–3-noded. Leaf sheaths often longer than internodes, glabrous; leaf blades linear, flat or rolled, 10–30 cm, 2–4 mm wide, abaxial surface smooth, glabrous, adaxial surface densely puberulous; ligule ca. 0.5 mm or absent, margin ciliolate. Panicle loose, narrowly lanceolate in outline, 10–15 cm; branches 2–4 per node, ascending, 4–5 cm, scabrid, bare in lower part, each bearing 1 or 2 spikelets. Spikelets ca. 1 cm, yellowish green or purplish, florets usually 3; rachilla hairs 2–2.5 mm; lower glume narrow ovate, 4.2–7 mm, 1(–2)-veined, upper glume 6.3–8.3 mm, 3-veined; lemmas herbaceous with membranous apex, 7-veined, first lemma 7.5–9 mm, smooth, apex usually subentire, occasionally splitting into 2 teeth; awn arising at upper 2/5 of lemma, 1.2–1.6 cm, geniculate, column loosely twisted, terete; palea keels ciliolate. Anthers 2.5–3 mm.

* High mountain peaks; ca. 3000 m. Taiwan.