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Taiwan Gramineae | Family List | Poaceae | Bromus

Bromus formosanus Honda, Bot. Mag. Tokyo. 42: 136. 1928. Honda, Monogr. Poac. Jap. 38. 1930; Keng, Fl. Ill. Pl. Prim. Sinicarum Gram. 265. f. 215. 1959; Hsu, Taiwania 16: 237. 1971; Hsu, Taiwan Grass 297. pl. l43. 1975; Hsu, Fl. Taiwan 5: 430. pl. 1387. 1978; Koyama, Grass. Jap. Neighb. Reg. 34. 1987.

台灣雀麥

Bromus formosanus

Credit: CC Hsu, 1975 Taiwan Grasses

Perennials. Culms ascending, 30-40 cm tall, 1.5 mm wide. Leaf-blades chartaceous, linear, 15-24 cm long, 3-4 mm wide, sharp at apex, veins conspicuous, glabrous above, glabrous beneath. Sheath glabrous. Ligule membranous or chartaceous, triangular-shaped, rounded or acute at apex, 0.5 mm long. Inflorescence an open panicle, 8-15 cm long. Spikelets with 7-8 florets, lanceolate, 20-24 mm long, 6 mm wide, slightly laterally compressed. Pedicels minutely hispid to glabrous. Lower glumes chartaceous, strigose to glabrous, lanceolate to narrowly lanceolate, acute at apex, 9-11 mm long, 3-nerved. Upper glumes chartaceous, lanceolate to broadly lanceolate, sharp to obtuse at apex, 11-12 mm long, 5-nerved, minutely strigose to glabrous. Florets 14-15 mm long, with rachilla. Lemmas chartaceous, lanceolate to elliptical, margins inrolled, rounded or acute at apex, 14-15 mm long, shorter than 20 mm, with a short awn less than the 1/2 length of lemma, 7 to 8-nerved, hairy, densely hirsute on marginal region of backside. Paleas membranous, linear oblong, round, truncate or acute at apex, 9-10 mm long, 2-nerved, ciliate on nerves. Callus glabrous. Anthers 2.5 mm long. Caryopsis oblong to linear-oblong, 8 mm long, hilum linear.

HSINCHU: Tapachienshan, Hsu 12194 . TAICHUNG: Hsuehshan, Shimada 2611 . ILAN: Nanhutashan, Suzuki s. n. Jul. 17, 1937 ; Fukuyama 4080 ; Hsu 5966 ; Lu 23405 .

Endemic to the alpine region of Taiwan.


 

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