Agrostis morrisonensis Hayata, Icon. Pl. form. 7: 86. f. 53. 1918; Hsu, Fl. Taiwan 5: 400. 1978.
Agrostis flaccida Hack. var. morrisonensis (Hayata) Honda, Bot. Mag. Tokyo 40: 324. 1926.
Agrostis rigidula Steud. subsp. rigidula Koyama, Grass. Jap. Neighb. Reg. 196. 1987.
Blades up to 2 mm wide, smooth to slightly scaberulous. Panicle contracted to effuse, branches more or less smoot, the lowermost ongest up to 8 cm long. Spikelets 1.85-2.85 mm long. Lemma 1.5-1.8(-2.15) mm long, Tricodium-net well-developed; callus hairs absent to 0.25 mm long; awn absent. Palea 0.15-0.35 mm long, 0.1-0.17 times as long as the lemma. Anthers 0.5-1 mm long, 0.25-0.57 times as long as the lemma.
ILAN: Nanhutashan, Hsu 5945. HSINCHU: Tapachienshan, Hsu 12143. TAICHUNG: Hsuehshan, Mori s. n. Oct. 20, 1936. NANTOU: Nengkaoshan, Hbino et al. s. n. July 10. 193. CHIAYI: Alishan, Yamamoto et al. s. n. Nov. 6, 1938; Yushanchienhon, Y. F. Chen 11421. HUALIEN: Tayuling, Kuoh et al. 7040.
Distributed in Malesia and Taiwan.
