Ampelocalamus naibunensis (Hayata) T. H. Wen

Culms apically drooping, 3–6 m, 5–10 mm in diam.; internodes 12–28 cm, glabrous, hollow; nodes raised; wall 2–3 mm thick. Branches several per node. Culm sheaths thinly papery, sparsely setose; auricles minute, brown setose; blade readily deciduous, linear-subulate. Leaf sheaths 3–6 cm; glabrous; auricles minute; ligule arched, long, ciliate; blade lanceolate, (3–)4–14 × 0.5–1.2 cm, transverse veins not distinct. Spikelets 2–4 cm; florets 3–6. Glumes 2, narrowly rounded; lemma ovate, narrowly rounded, 10–12 × 3–4 mm, 7–11-veined; palea 7–11 × 2–3 mm; lodicules 3, ciliate. Anthers ca. 4 mm. Ovary obovoid; styles 2; stigmas 2, plumose. Caryopsis unknown. Fl. Feb.

S Taiwan (Pingdong).

* About 1000 m.

Arundinaria naibunensis Hayata, J. Coll. Sci. Imp. Univ. Tokyo 30: 408. 1911; Bambusa naibunensis (Hayata) Nakai; Chimonobambusa naibunensis (Hayata) McClure & W. C. Lin; Drepanostachyum naibunense (Hayata) P. C. Keng; Leleba naibunensis (Hayata) Nakai; Pleioblastus naibunensis (Hayata) Kanehira & Sasaki; Pseudosasa naibunensis (Hayata) Makino & Nemoto.