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FOC | Family List | FOC Vol. 22 | Poaceae | Yushania

53. Yushania confusa (McClure) Z. P. Wang & G. H. Ye, J. Nanjing Univ., Nat. Sci. Ed. 1981(1): 92. 1981.

鄂西玉山竹 e xi yu shan zhu

Indocalamus confusus McClure, Lingnan Univ. Sci. Bull. 9: 20. 1940; Sinarundinaria confusa (McClure) P. C. Keng.

Rhizome neck 10–40 cm, (2–)4–7 mm in diam. Culms 1–2 m, 2–10 mm in diam.; internodes purple spotted, terete, 10–33 cm, initially white powdery, glabrous, nearly solid; supra-nodal ridges level; sheath scar prominent, initially yellow setose. Branches 1 or 2 at lower nodes and 3–5 at upper nodes. Culm sheaths persistent, narrowly triangular, leathery, brown setose, margins setose; auricles absent; oral setae readily deciduous; ligule truncate, ca. 1 mm, glabrous; blade reflexed, linear-lanceolate or linear, basally slightly hairy adaxially, margins serrulate. Leaves 2–5(–7) per ultimate branch; sheath margins white-gray ciliate; auricles absent; oral setae 2–5 mm; ligule truncate, ca. 1 mm, glabrous; blade lanceolate, 8–13 × 0.6–1.5(–2.1) cm, abaxially thinly hairy basally, secondary veins 4–6-paired, transverse veins distinct, base cuneate, one margin serrulate, other margin obscurely so. Inflorescence paniculate; spikelet 1.2–3.4 cm; florets 2–6, green-purple; rachilla 3–4 mm, hairy. Lemma lanceolate, margins ciliolate; palea keels ciliate, apex bifid. Anthers yellow. Ovary ovoid, glabrous. Caryopsis unknown. New shoots Apr–Aug.

* 1000–2300 m. N Guizhou, W Hubei, W Hunan, SW Shanxi, E Sichuan.


 

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