Sorghum propinquum (Kunth) Hitchc., Lingnan Sci. J. 7: 249. 1929. Hsu, Fl. Taiwan 5: 697. 1978.
Andropogon propinquum Kunth, Rev. Gram. 1: Suppl. 40. 1830
Sorghum halepense var. propinquum (Kunth) Ohwi, Bot, Mag. Tokyo 55: 550. 1941.
Holcus halepensis var. genuinus Honda, Bot. Mag. Tokyo 40: 99. 1926, Monogr. 333. 1930.
Culm solid, erect, about 2.5 mm in diameter. Blade linear, up to 13 mm wide;
ligule about 2 mm long, chartaceous, ciliate on the backside. Spikelets paired, dimorphic; the upper pedicelled, lanceolate, 1/2 the width of the sessile spikelet, pubescent all over; the lower sessile, broadly lanceolate, about 4 mm long. Glumes coriaceous, as long as the spikelet; the lower glume broadly lanceolate, 2-keeled, shortly bristled along the keels, mucronate at the apex, 13-nerved, tessellate nerved, pubescent on the back and margins; the upper glume lanceolate, boat-shaped, margins inrolled, fimbriate along upper margins; tessellate-nerved. Upper floret membranous; lemma about 3.5 mm long, lanceolate, margins folded and fimbriate on upper part; palea lanceolate, fimbriate along margins. Lower floret reduced to a lemma, deltoid-lanceolate, about 3 mm long, 1-nerved, thickened at the end of nerves, margins fimbriate, mucronate at the apex.
Distributed in the Malay Peninsula, China and the Philippines.
Cultivated in Taiwan.