业平竹 ye ping zhu

Bambusa fastuosa Mitford, Garden (London) 46: 547. 1894; Arundinaria fastuosa (Mitford) J. Houzeau; A. narihira Makino; Phyllostachys fastuosa (Mitford) Pfitzer.

Culms 3–9 m, 1–4 cm in diam.; internodes initially green, later brownish, terete, 10–30 cm, glabrous, hollow. Branches 3 per node. Culm sheaths essentially glabrous but proximally hairy; auricles minute; oral setae few; ligule 1–1.5 mm, apex truncate, ciliate; blade narrowly lanceolate, apex acuminate. Leaves 3–7(–10) per ultimate twig; sheath ca. 4 cm, sparsely pubescent; auricles obscure; ligule truncate, 1–1.5 mm; blades narrowly lanceolate, 8–20 × 1.5–2.5 cm, papery, glabrous or abaxially proximally pubescent, secondary veins 6–8-paired, transverse veins present, base rounded or broadly cuneate, contracted into a short pseudopetiole, margin serrulate, apex acuminate. Inflorescence panicle-like, subtended by ovate or lanceolate, leathery, glabrous, sheathlike spathes 3.5–4 cm. Pseudospikelets 1 or 2 subtended by a spathe; spikelet narrowly terete, 5–10 cm; florets 3–6; rachilla ca. 1 cm. Glumes always absent; lemmas ovate or broadly lanceolate, 1.5–3 cm, leathery, ciliate, ca. 20-veined; palea broadly lanceolate, 1.8–2 cm, 3-veined, apex bifid; lodicules ca. 5 mm. Filaments ca. 2 cm; anthers yellow, ca. 1.1 cm. Ovary terete, ca. 4 mm, glabrous; styles ca. 4 mm; stigmas 3, plumose. Caryopsis unknown.

Cultivated in many cities of Taiwan and mainland China [native to Japan (SW Honshu)].