Brachystachyum GRAMINEAE Phyllostachys 



like racemes subtended by a series of closely set scales: stamens 3. One species in 

 southeastern China. (Greek: brachy, short, and stachys, spike; alluding to the short 

 spike-like raceme.) 



1. Brachystachyum densiflorum (Rendle) Keng (Arundinaria densiflora Rendle) 

 (F.H.E. 3: 434). Shrub, to 3 m. Southeastern China; locally in Che., Ku. Open 

 slopes. Fig. 403. 



4. Phyllostachys Sieb. & Zucc. ^YjM, (Mao Chu Shu; Hairy-bamboo Genus) 



Trees or shrubs: rhizomes monopodial: culms semiterete or the internode flattened 

 or grooved on one side, usually with 2 brs. at each node: spikelets arising from the 

 nodes of flower-branchlets, intermingled with spathes, in spikes or glomerate fascicles; 

 the latter subtended by scales as in Brachystachyum. About 30 species, in eastern 

 Asia, 15 in China. (Greek: phyllos, leaf, and stachys, spike.) 



Key to the Species 



a. Culms 5-20 cm. in diam. 



Culm-sheaths hairy, blackish 1. P. edulis 



Culm-sheaths glabrous 2. P. sulphured 



var. viridis 

 aa. Culms 0.5-3.0 cm. in diam. 



b. Spikelets in spathate spikes, the spathe distinctly foliaceous at 



the apex 3. P. bainbusoides 



bb. Spikelets in spike-like clusters or globose heads; the spathe acu- 

 minate or bearing a much reduced blade at the apex, 

 c. Culms fruticose or somewhat arborescent, 1-2 cm. or more 

 thick, 

 Culms smooth, lustrous, becoming nigrescent the second year.. 4. P. nigra 

 Culms rather rough, dull, remaining green or yellowish brown 4a. P. nigra 



var. henonis 

 cc. Culms suffruticose, about 1 cm. thick. 



d. Partial infl. on brs. of the previous year. 



Spikelet-clusters on leafless brts. or overtopped with a 



few blades 5. P. nidularia 



Spikelet-clusters mostly terminating the lfy. shoots 6. P. congesta 



dd. Partial infl. on brs. of the current year. 



Spikelet-clusters 5-10-spiculate; spikelets 3-6-fld 7. P. dubia 



Spikelet-clusters 3-spiculate; spikelets 2-3-fld 8. P. stauntoni 



1. Phyllostachys edulis (Carr.) Houzeau de Lehaie (R.M. 891). Tree, to 20 m. China, 

 Japan; locally in Che. Planted. 



2. Phyllostachys sulphurea Riv. var. viridis Young (Wash. J. 27: 345). Tree, to 

 14 m. Culm and brs. green. Japan, China. Planted. 



3. Phyllostachys bambusoides Sieb. & Zucc. fflft (Kang Chu; Rigid Bamboo) (R. 

 M. 891). Tree, 3-6 m. high; fls. VII; fr. VIII. China and Japan; locally in An., 

 Ki., Ku. Commonly cultivated. 



"Phyllostachys reticulata (Rupr.) Koch, to which this species has been referred, was based 

 on a mixture of sterile specimens, without culm-sheaths, representing several species in at least 

 two distinct genera, and the specific description includes them all." — F. A. McClure. 



4. Phyllostachys nigra (Lodd.) Munro %% (Tzu Chu; Purple Bamboo) (R.M. 892). 



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