2. Arundo formosana Hackel, Bull. Herb. Boissier. 7: 724. 1899.
台湾芦竹 tai wan lu zhu
Arundo formosana var. gracilis Hackel; A. formosana var. robusta Conert; A. parviflora Ohwi.
Tufted perennial from a short rhizome. Culms relatively slender, suberect to pendant, 0.6–1.2 m tall, 2–6 mm in diam., with slender clusters of branches from nodes. Leaf sheaths longer than internodes, glabrous; leaf blades 10–25 × 0.5–1.5 cm, margins scabrous, basal part with long silky hairs, apex acuminate; ligule 0.5–1 mm. Panicle 10–30 cm, loosely contracted, light brownish; branches 5–8 cm, ascending. Spikelets 6–10 mm, florets 2–5, uppermost floret much reduced; glumes 3–4 mm, 3-veined, lower glume lanceolate-elliptic, acuminate, upper glume lanceolate, acuminate; lemmas narrowly lanceolate, 3.5–6 mm, 5-veined, dorsal hairs 1.5–3 mm, apex subentire to minutely bidentate with 1.5–3 mm awn from sinus, lateral veins shortly extended or not; palea 2/3 length of lemma body. Fl. and fr. Jun–Dec.
Dry coastal grassland and sea cliffs. Taiwan [Japan (Iriomote Island in S Ryukyu Islands), Philippines].
The culms are used for basket making.