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Taiwan Gramineae | Family List | Poaceae | Pseudoraphis

Pseudoraphis spinescens (R. Br.) Vickery, Proc. Roy. Soc. Queensland. 62 (7): 69. 1952; Hsu, Fl.Taiwan 5: 594, pl. 1444. 1978.


Pseudoraphis spinescens

Credit: CC Hsu

Panicum spinescens R. Br. Prod. Fl. Nov. Holl. 193. 1810.

Stem floating on water, nodes pubescent. Blade lanceolate-linear, 3-6 cm long, 2-4 cm wide, with a petiole of ca. 1 mm long, membranaceous, erose. Panicle 6-14 cm long, branches stiff, extending beyond spikelet into a bristle of 6-10 mm long. Spikelets hispid, lanceolate, 5-7 mm long, solitary on pedicel of ca. 0.5 mm long; lower glume truncate or rounded, hyaline, ca. 0.5 mm long; upper glume 5- 7 mm long, acuminate, hispid on veins; lower lemma slightly shorter than upper glume, veins ca. 13, obscure, acuminate, enclosing a lower palea and a staminate flower; upper lemma pistillate 1.6-1.8 mm long, membranaceous; anther ca.1 mm long. Caryopsis much exceeding upper floret when mature.

TAIPEI: Neihu, Masamune 2460. TAINAN: Hsinhua, Hsu 614.

India, Sri Lanka, Myanmar. Indochina, Malesia, northern Australia, China and Japan. Taiwan, growing in shallow water or floating on deep water.


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