DESCRIPTIONS OF TRIBES AND GENERA. 



207 



species most useful in East India, especially the first, 

 which becomes very durable after lying in water. Both 

 are thornless. B. arundinacea Retz (Fig. 108, A, and 

 Frontispiece) (B. spinosa Roxb.) is a thorny and also an 

 Indian species. B. vulgaris Wendland (B. Thouarsii 

 Kunth) (Figs. 109, 110), with prominently netted-veined 

 leaves, compressed spikelets, and a 

 long, hairy style, is frequently culti- 

 vated in the tropical zones of both 

 hemispheres ; its native country is 

 uncertain ; it is also found in Euro- 

 pean green-houses. B. Fortunei Van 

 Houtte (B. picta and B. variegafo 

 Sieb.) is a somewhat dwarfed species, 

 with broadly striped leaves and 

 transparent cross-veins, and makes 

 a beautiful ornamental plant. It is 

 from Japan, and endures the winter 

 in Western Europe. B. nana Pioxb. 

 {B. glaucescens Sieb.), from Japan and 

 China, is 2 m. high and has leaves 

 that are grayish blue on the under- 

 side. There are other species having 

 horticultural names but 

 which are not scien- 

 tifically classified. 



Sec. II. (285) Guadua 

 Kunth (as a genus). 

 Keel of palea more or 

 less distinctly winged. 



Species fifteen, all 

 belonging to the New 

 World, known in Brazil B 

 as "Taguara." The 

 same name is, however, 

 applied to the Chusquem 

 and Arthrostylidire. 



Sec. III. GuadueUa Franch. (as a genus). Keel of the 

 palea distinctly winged ; spikelets strongly compressed. 



According to Franchet the species included in this 



Fig. 110. — Bambusa vulgaris Wendland. 

 (After Kunth, Revis. Gram. pi. 74.) 



