448 



BAMBOO 



BAMBOO 



460 . Phyilostachys 

 ruscifolia. 



bright green at first, fading as they ripen to a dingy 

 yellow: sheaths early deciduous, the ligule extended 

 into fringed auricles: Ivs. 3-4 in. long, about J^in. wide 

 or a little more, bright green above, whitened below. 

 China and Japan. Gn. 7:279. G.C. III. 15:433; 

 18:183. Frequent in cult, and very hardy. 



29. P. bambusoides, 

 Sieb. & Zucc. Height 

 6-10 ft. : sts. slender, zig- 

 zag, green at first, event- 

 ually yellowish : sheaths 

 purplish, early deciduous: 

 branches in 3's, the long- 

 est in the middle, little 

 longer than the internodes: 

 Ivs. variable, & 



in. long, 1 in. 



or less wide, ser- 



rate, the teeth 



especially sharp 



on one edge, 



bright green, 



pale beneath. 



China and 



Japan. Gamble, Bamb. Brit. Ind. 27, t. 



27. The true plant very rare in cult. 



cc. Plants low, 1-8 ft. high. 



30. P. ruscifdlia, Hort. Kew (P. 

 Kumasdca, Mitford. P. Kumasdca, 

 Munro. B. ruscifdlia, Sieb. B. vimina- 

 lis, Hort.). Fig. 460. Height 1-3 ft.: 

 sts. zigzag, dark to pale green: sheaths 

 purple, much fringed: branches very 

 short, not more than 1 or 2 in. long, in 

 3's and 4's: Ivs. 2-3 in. long, about 1 



in. wide, ovate in outline. Japan. G.C. III. 15:369; 

 18:189. The sts. are almost solid, the tube being ex- 

 ceedingly small. Dwarfest species of Phyilostachys. 



SECTION II. Venation essentially striate, i.e., the veins 

 running in parallel lines from the base to the apex, 

 cross veins obsolete or obscure, but usually with a 

 number of interposed pellucid dots. (Embraces 

 the less hardy types of bamboos, 31-41.) 



A. Sts. hollow, not spiny. 

 B. Lvs. averaging not more than S in. long. 



31. A. n6bilis, Mitford. Height 15-25 ft.: Ivs. 2-3 

 in. long, usually less than J^in. wide, bright green, 

 borne on short, purple petioles, striate-veined: sts. 

 yellow-green, with purple-brown nodes. Probably a 

 native of China. A large and graceful species intro. 

 into Calif, by Franceschi in 1896. One of the hardiest 

 of the arundinarias with striated Ivs. 



32. A. debilis, Thwaites. Height probably 5-10 ft.: 

 sts. clustered, much branched, the nodes 2-6 in. apart, 

 yellowish: Ivs. 1-3 in. long, J^in. or less wide, striate- 

 veined. High mts. of Ceylon and the Philippines. 

 Gamble, Bamb. Brit. Ind. 7, t. 6. Intro, in Calif, and 

 offered in 1910 by the Montarioso Nursery. The char- 

 acter of the venation would seem to imply only 

 moderate hardiness. 



BB. Lvs. averaging not more than 6 in. long. 



33. A. Ffilconeri, Benth. (T. Fdlconeri, Hook. f. 

 B. gracilis, Hort., not Wall.). Height 10-15 ft.: sts. 

 slender, bright green when young, yellow when old, 

 the internodes sometimes white-waxy: Ivs. thin, 3-4 

 in. long, about V6m. wide, striate-veined. Himalayas. 

 Gamble, Bamb. Brit. Ind. 20, t. 18. B.M. 7947 Not 

 very hardy. The If.-sheaths are smooth, cut short at 

 the top, without a fringe, and with an elongated ligule; 

 while A . falcata has very downy If.-sheaths, fringed with 

 long hairs at the intersection with the If. The serra- 



tions of the If.-edges are more pronounced in A. 

 Falconeri, especially on one side. 



34. A. falcata, Xees (B. falcata, Hort.). Height 10- 

 20 ft.: Ivs. 4-6 in. long, about >^in. wide, light green, 

 striate-veined: sts. slender, not exceeding J^in. diam., 

 covered with a bluish white-waxy coating when young, 

 eventually yellow-green: sheaths downy, ciliate at the 

 ligule. Himalayas. Gamble, Bamb. Brit. Ind. 12, t. 

 11 and 12. A great many plants cult, under this name 

 are really A. Falconeri, a species with smooth sheaths 

 and fringeless ligules. Requires a mild climate. 



BBB. Lvs. averaging more than 6 in. long. 



c. Culms 15-25 ft. tall, reddi-sh brown 



at maturity. 



35. A. Hookeriana, Munro. Height 

 15-25 ft.: culms glaucous green when 

 young, turning reddish brown with age: 

 nodes prominent, with a bluish ring: Ivs. 

 6-10 in. long, J/-l /^ ' n - wide, the venation 

 striate. Himalayas. Gamble, Bamb. Brit. Ind. 17, t. 

 15. The tallest and largest species of arundinaria in 

 cult. Intro, in Calif, by Franceschi. Not very hardy. 



cc. Culms taller; giant species: sts. green or yellowish. 



36. B. vulgaris, Schrad. FEATHERY BAMBOO. Height 

 20-80 ft.: sts. bright green, 4 in. diam., or more, 

 straight at first, eventually much arched by the weight 

 of the dense foliage: branches numerous, striate: Ivs. 

 usually 6-10 in. long, 8-15 lines wide, rough on and 

 near the margins and on the lower surface. India. 

 G.C. III. 25:390. Gamble, Bamb. Brit. Ind. 44, t. 49. 

 Var. aftreo-variegata, Hort., GOLDEN BAMBOO, has 

 canes of a rich golden yellow color, penciled with green. 

 Will stand but slight frost. 



37. D. Hamiltonii, Nees & Arn. Height up to 80 ft. : 

 sts. 4-7 in. diam., much branched above, pubescent 

 with white hairs when young: internodes 12-20 in. 

 long: Ivs. variable, sometimes 15 in. long, 2J-6 in. wide, 

 finely serrate; midrib narrow, with 6-17 nerves on 

 either side, the nervules chiefly of pellucid glands. 

 Himalayas. Gamble, Bamb. Brit. Ind. 85, t. 74. 

 The lower branches usually seated on woody knobs. 

 Promises to become an important member of the tall 

 bamboos in S. Calif. 



38. D. latifld- 

 rus, Munro. 

 Height 60-70 

 ft. : sts. erect 

 and remarkably 

 straight, 4-5 in. 

 diam., with a 

 large cavity: Ivs. 

 7-10 in. long, 

 1-2 in. broad, 

 long-acuminate, 

 deep green, 

 borne on short 

 petioles; midrib 

 prominent, with 

 about 9 nerves 

 either side, the trans- 

 verse nervules lacking 

 or obscure. Formosa, 

 Burma, Cochin China. 

 Gamble, Bamb. Brit. 

 Ind. 131, t. 117. 

 Munro, Trans. Linn. 

 Soc. 26:152, t. 6. 

 Considered one of the 

 best of the giant bam- 

 boos in S. Calif. 



39. D. membrana- 



C6US, Munro. Height 4^1. Bambusa arundinacea. 



60-70 ft.: sts. white- (XH) 



