Japan Flora: Culms rather firm, 15-40 cm. long, from axils of long creeping, leafy stolons; leaf-blades pale green, rather flat or with involute margins, 5-8 cm. long, 1.5-4 mm. wide, short-linear, sparsely long-pilose especially near the very short ligule; inflorescence digitate; spikes 3-7, ascending to spreading, 2.5-5 cm. long, sessile; spikelets 2-3 mm. long, rather dense, appressed to the axis, pale green, sometimes with a pale reddish hue; glumes unequal, lanceolate, 1-nerved, acute, the first incurved and appressed to the lemma, about 1.5 mm. long, the second ascending, about 2 mm. long, slightly shorter than the lemma; lemmas ovate, folded, obtuse or mucronate, 2.5-3 mm. long, the keel slightly curved, appressed-pubescent; anthers 1-1.5 mm. long June-Aug. Sunny places; Hokkaido, Honshu, Kyushu, Shikoku; common. Widespread in all temperate and tropical regions.

var. nipponica Ohwi. A robust phase with spikes 5-10 cm. long; spikelets 3-3.5 mm. long. Hon­shu and westward; connected by intermediates with the typi­cal phase. 

Korea Flora: Habit A perennial herb growing along the ground surface with erect flowering stems, 15-40cm tall.
Leaves Green, flat or involute, 5-8cm × 1.5-4mm, with long hairs near the ligule.
Flowers First glume ca. 1.5mm long, second glume ca. 2mm long, each with 1 vein, shorter than the floret; lemma ovate, 2.5-3mm long, with appressed hairs below the keel and lateral veins. Anthers 1-1.5mm long.
Inflorescence Flowering June-August, inflorescence with 2-7 branches spreading digitately, 2.5-5cm long. Spikelets arranged in 2 rows closely appressed to the branches, spikelets 2-3mm long, nearly sessile.
Fruits and Seeds [No description provided]
Distribution Coastal areas, southern regions, and Gyeonggi Province, Naksansa Temple in Gangwon Province