生活型

herb

形態特徵

• Culms erect, to 50 cm tall, 3-7-noded, nodes bearded.
• Blade linear-lanceolate, 4-20 cm long, margins scabrous, usually soft hairy; ligule rounded, membranaceous, 2-4 mm long; sheath loose, margin ciliate, usually shorter than internode.
• Racemes paired, 3-8 cm long; rachis and pedicel swollen, ca. 2/3 as long as spikelet, ciliate. Spikelets paired, one pedicellate and other sessile. Sessile spikelet ca. 4 mm long; callus bearded; lower glume coriaceous except at apex, with 4-5 transversely rugose lines on dorsal part, margins keeled and winged, wings minutely ciliate; upper glume boat shaped, 1-keeled; lower lemma slightly shorter than spikelet, upper margin shortly ciliate; upper lemma deeply 2-cleft, awn 15-20 mm long, protruding from sinus; anthers ca. 2 mm long. Pedicellate spikelet awnless, sometimes reduced to only glumes.
• Variable; <i>Ischaemum akoense</i> may only be an extreme form of this species.

分布

• 台灣 : wet and dry habitats.
• 世界 : From India, Myanmar, Malaya, Thailand to China.

引證標本

NANTOU: Nanhua, Suzuki 5900. KOAHSIUNG: Chishan, Hsu s. n. 7 Jul 1968.

參考文獻

• HSU, Chien-Chang, Flora of Taiwan, second edition 5: 560. 2000.  (Fl. Taiwan 2nd edit.)