1. Tribe BAMBUSEAE - China

POACEAE 143veined, upper margin ciliate. Anthers black or purple, 5–6 mm.Stigmas gray-white or milky-white, ca. 3 mm. Inflorescenceunknown.● Fissures of rocky hillsides. Sichuan.22. Indocalamus wilsonii (Rendle) C. S. Chao & C. D. Chu, J.Nanjing Technol. Coll. Forest Prod. 1981(3): 43. 1981.鄂 西 箬 竹 e xi ruo zhuArundinaria wilsonii Rendle, J. Linn. Soc., Bot. 36: 437.1904; Indocalamus nubigenus (P. C. Keng) H. R. Zhao & Y. L.Yang; I. shimenensis B. M. Yang; Sasa nubigena P. C. Keng;Sinarundinaria wilsonii (Rendle) P. C. Keng.Culms 30–90 cm or more, 0.2–0.4 cm in diam.; internodes4–12 cm, glabrous or white pubescent, sometimes with adensely pubescent ring below each node, lumen 0.5–1 mm indiam.; supra-nodal ridge flat or weakly prominent; sheath scarflat. Culm sheaths pale red-brown or straw-colored, closely embracingculm, ca. 1/2 as long as internode, thickly papery,densely deciduously white pubescent, densely pubescent or glabrescentnear outer margin, veins conspicuous, transverse veinssometimes distinct; auricles and oral setae absent; ligule short,ca. 0.6 mm; blade ovate-lanceolate or narrowly triangular, 2–15mm, base contracted, apex acute. Branch sheaths orange-redwhen dry, glabrous; ligule 1.5–4 mm; blade lanceolate ornarrowly ovate-lanceolate, 2.5–4 cm. Leaves 3(–5) per ultimatebranch; sheath yellow-green, tinged with red, glabrous orpubescent; auricles and oral setae absent; ligule 2.5–9 mm;blade oblong-lanceolate, 6–17 × 1.5–4.7 cm, wavy when dry,abaxially gray-green and pilose, adaxially yellow-green andglabrous, secondary veins 4–8 pairs, tessellations square, baserounded or broadly cuneate, apex acuminate with a weak point.Panicle 5–10 cm, base encircled by leaf sheath; branches ascendant,slender, glabrous, pulvinate. Spikelets usually purplegreen,1.5–2.6 cm; florets 3–7. Rachilla internodes ca. 4 mm,densely yellow-villous. Glumes usually 2, glabrous; lowerglume 2–3 mm, 3-veined; upper glume 3–5 mm, 5–7-veined;lemma puberulent, 7–9-veined, apex acuminate with a shortmucro, callus densely white villous; palea 6–7.2 mm, puberulent.Anthers yellow. Styles 2(or 3). Fl. May–Aug.● Forests; 1700–3000 m. Guizhou, Hubei, Sichuan.Taxa incertae sedisIndocalamus amplexicaulis W. T. Lin (J. S. China Agric. Univ.13(2): 86. 1992) was described from Guangdong.Indocalamus chebalingensis W. T. Lin (J. Bamboo Res. 19(1): 6.2000) was described from sterile material from Guangdong (Shixing).In the protologue it was compared with I. longiauritus.Indocalamus confertus C. H. Hu (J. Bamboo Res. 15(1): 1. 1996)was described from Sichuan.Indocalamus cordatus T. H. Wen & Y. Zou (J. Bamboo Res.10(1): 18. 1991) was described from Jiangxi.Indocalamus macrophyllus C. F. Huang (Wuyi Sci. J. 8: 171.1991) was described from Fujian (Wuyi Shan).Indocalamus pumilus Q. H. Dai & C. F. Huang (Acta Phytotax.Sin. 24: 394. 1986) was described from a cultivated plant in theGuangxi Institute of Forestry Bamboo Garden in Nanning, Guangxi.Indocalamus suichuanensis T. P. Yi & Y. H. Guo (J. Bamboo Res.14(1): 14. 1995) was described from Jiangxi.Indocalamus youxiuensis T. P. Yi (J. Bamboo Res. 11(3): 53.1992) was described from Sichuan.29. INDOSASA McClure, Lingnan Univ. Sci. Bull. 9: 28. 1940.大 节 竹 属 da jie zhu shuZhu Zhengde ( 朱 政 德 Chu Cheng-de); Chris StapletonArborescent bamboos, sometimes shrubby. Rhizomes leptomorph, with running underground stems. Culms diffuse, erect tonodding; internodes substantially grooved above branches; wall thick, cavity with granular or spongy pith; nodes prominent. Midculmbranches 3, subequal or central dominant. Culm sheaths deciduous, leathery or thickly papery, setose; ligule truncate; bladelarge, triangular or lanceolate, rarely strap-shaped. Leaves usually medium to large-sized, transverse veins distinct. Inflorescencefully bracteate, partially iterauctant, lateral, racemose, sessile, prophyllate. Spikelets many flowered, gradually enlarged; basal bractsand glumes often with basal axillary buds developed into secondary spikelets; basal 1–4 florets sometimes sterile. Glumes usually 2;lemma larger and broader than glumes, many veined; palea obtuse, 2-keeled; lodicules 3, subequal. Stamens 6; filaments free. Ovarynarrowly ellipsoid or fusiform; style short; stigmas 3, plumose. Fruit a caryopsis, ovoid to ellipsoid, beaked. New shoots spring–earlysummer.About 15 species: S China, N Vietnam; 15 species (13 endemic) in China.Indosasa is the only genus of bamboos in China with six stamens, bracteate inflorescences, and leptomorph rhizomes.In addition to the species treated below, Indosasa jinpingensis T. P. Yi (J. Bamboo Res. 20(4): 1. 2001) was described from Yunnan (Jinping). Inthe protologue it was compared with I. parvifolia.Indosasa hispida (species no. 13) could not be included in the following key because its culm sheaths are unknown.1a. Culm sheaths without auricles.2a. Culm internodes initially glabrous.3a. Culm sheaths asymmetrical, central parts of sheath densely setose; culm wall thick, internodes nearlysolid at culm base ........................................................................................................................................... 1. I. crassiflora