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Chinese Plant Names | Family List | Poaceae | Pennisetum

Pennisetum longissimum S. L. Chen et Y. X. Jin


Description from Flora of China

Pennisetum baojiense W. X. Tong.

Perennial forming loose tussocks. Culms decumbent, rooting at base, up to 1.8 m tall, 8–14-noded. Leaf sheaths usually longer than internodes, glabrous or papillose-pilose; leaf blades linear, 50–90 × 0.5–2 cm; ligule 2.5–3 mm. Inflorescence up to 30 cm, usually pendulous; axis densely hispidulous with angular ribs, peduncle stumps crowded, very short with a tuft of spiculae; involucre enclosing 1(–3) spikelets, basal stipe ca. 0.5 mm; bristles glaucous or purple, stiff, glabrous, unequal, one conspicuously longer and stouter, up to 4 cm. Spikelets lanceolate, 6–8 mm; lower glume ovate, ca. 1/4 as long as spikelet, 0–1-veined, obtuse, acute or erose; upper glume 1/3–1/2 as long as spikelet, 1–3(–5)-veined, acuminate; lower floret usually neuter, lemma as long as spikelet, 5–7-veined, scaberulous, acuminate-rostrate; upper lemma similar but usually slightly shorter; anthers without hairs at tip. Fl. and fr. Jul–Oct.

This species is very similar to Pennisetum shaanxiense, but is rather more vigorous. The involucral bristles appear to be always glabrous.

* Open hill slopes; 500–2000 m. Gansu, Guizhou, Shaanxi, Sichuan, Yunnan.


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