Syntherisma hayatae Honda var. magna Honda, Bot. Mag. (Tokyo) 38: 128. 1924.
Perennials; culm stout, decumbent, 40-60 cm high. Blade linear-lanceolate, acuminate, 7-10 cm
long, 3-5 mm wide, villous-tomentose; sheath loose, 2 times as long as internode, keeled, villoustomentose;
ligule membranaceous, obtuse, 1 mm long, glabous. Inflorescence in digitate racemes,
racemes 3-4, 6-9 cm long; rachis narrowly winged, 1 mm wide. Spikelets oblong-elliptic, acute, 1.5-2
mm long; glumes covered with long hairs; upper 3-veined; lower lemma as long as spikelet, 7-veined,
pilose between lateral veins and margins; upper lemma glabrous, margins involute, punctate all over.
TAOYUAN: Chuwei, Lee s. n. MIAOLI: Tapu, Hsu 600. TAITUNG: Ansuo, Hsu 1069.
Endemic to Taiwan, in sandy soils within coastal woods.