版纳甜龙竹 ban na tian long zhu

Sinocalamus hamiltonii (Nees & Arnott ex Munro) T. Q. Nguyen.

Culms 12–18 m, 9–13 cm in diam., often very pendulous; internodes 30–50 cm, persistently densely white to brown scurfy; wall 1.2–2 cm thick. Branches several, dominant central branch very well developed, especially on older pendulous culms where branches can approach size of culm. Culm sheaths deciduous, initially with patches or stripes of dark brown hairs, margins ciliate, apex slightly arched; auricles absent but with a delicate, naked, triangular protuberance to 1 cm on each side; ligule 1–3 mm, apex somewhat undulate and dentate; blade erect, 3–7 cm, narrow. Leaf sheaths yellow setose; ligule 1.5–2 mm; blade variable, largest ca. 38 × 7 cm. Pseudospikelets 10–25 per node, clusters 1–4 cm in diam. Spikelets dark purple, 8–10 × 3–5 mm, glabrous; fertile florets 2–4. Glumes 1 or 2; lemma 5–7 × 6–7 mm, apex long mucronate; palea about as long as lemma, apex bifid. Anthers yellow or red-purple, apex apiculate. Style ca. 4.5 mm; stigmas 1–3, red-purple. Caryopsis brown, ± spherical.

Yunnan [Bhutan, India, Laos, Myanmar, Nepal].

After publication of the family treatment for the Flora of China, it was determined that the name is a misidentification of D. parishii Munro, and D. semiscandens Hsueh & D. Z. Li is an additional synonym (Guo Yongbing & XIA Nianhe. J. Trop. Subtrop. Bot. 18(2): 133-136. 2010).