BAMBOO 



BAMBOO 



447 



growth is very pronounced, and it spreads with marked 

 rapidity. 



BE. Sts. either solid or quadrangular. 

 15 B. quadrangularis, Fenzi. Sts. square, especially 

 in older plants, 20-30 ft, tall: Ivs. deep green, serrate, 

 6-7 in. long, about 1 in. wide, the tessellation minute. 

 China and Japan. A wide-spreading species, when 

 established, and one possessing considerable hardiness. 

 New growth is produced mostly in late summer and 

 autumn. 



16. A. mann&rea, Franceschi (B. marmorea, Mit- 

 ford). Height 3-5 ft.: sts. slender, cylindrical, without 

 a cavity: sheaths purple, marbled with gray: nodes 

 unusually prominent, purple, with the under side bright 

 green: intornodes short, usually 1-2 in. long: Ivs. 3-5 

 in. long, about Vim. wide, abruptly and sharply pointed 

 at the apex. Japan. In cult, for several years in 

 Calif. 



cc. Foliage variegated. 



D. Plants low, usually 1-3 ft. in height. 



17. A. F6rtunei, A. & C. Riviere (B. Forlunei, Van 

 Houtte, and var. variegdta, Hort.). Fig. 459. Height 

 1-3 ft.: Ivs. 4-5 in. long, Yy- 3 Ain. wide, beautifully 

 striped with white. Japan. F.S. 15:1535. Sometimes 

 loses its Ivs. in severe winters, but quickly recovers in 

 spring. The internodes are rarely more than an inch 

 long. Var. aurea, Hort., with yellow variegation, is A. 

 auricoma. Var. vlridis, Hort. = A. humilis. An old 

 favorite. Rhizomes very active, requiring consider- 

 able space. 



18. A. auricoma, Mitford (.4. and B. Forlunei var. 

 aurea, Hort,). Height 2-3 ft.: Ivs. 4-6 in. long, about 

 an inch wide, brilliantly variegated with yellow, vel- 

 vety pubescent on the lower surface, serrate, with the 

 teeth more pronounced on one side: sts. purple: nodes 

 3-5 in. apart. Japan. An exceedingly beautiful and 

 meritorious ornamental of striking character. 



19. B. angustifdlia, Mitford (B. Vilmorinii, Hort.). 

 Height about 1 ft. : sts. slender, purplish or light green, 

 with prominent nodes: Ivs. 2-4 in. long, about M m - 

 wide, serrate, frequently variegated with white. Japan. 

 A dainty species, soon forming attractive clumps. 



DD. Plants taller than in D, usually in excess of 3 ft. (See 

 also under No. 13 for A. Simonii.) 



20. A. chrysantha, Mitford (B. chrysdntha, Hort.). 

 Height 3-5 ft.: Ivs. 5-7 in. long, 1 in. or less wide, 

 nearly smooth, more or less variegated with yellow. 

 Japan. Not so brilliantly colored as A. auricoma, from 

 which it may be readily distinguished by the prominent 

 ribs and absence of the soft velvety pubescence from 

 the lower surface of the Ivs. 



AA. Internodes flattened on one side: sheaths early 

 deciduous. 



B. Sts. black or brown. 



21. P. nigra, Munro (B. n\gra, Lodd.). BLACK 

 BAMBOO. Height 10-20 ft. : sts. green at first, but chang- 

 ing to black the second year: nodes conspicuous, the 

 upper rim nearly black, the lower edged with white: 

 Ivs. very thin, 2-6 in. long, 6-10 lines broad. China and 

 Japan. M. 142, and frontispiece. G.C. III. 15:369; 

 18: 185. R.B. 23, p. 268. B.M. 7994. One of the most 

 popular of the bamboos, markedly hardy and distinct. 

 Var. punctata, Hort., has yellowish sts. spotted with 

 brownish black. 



22. P. violescens, A. & C. Riviere (B. vioUscens, 

 Carr.). Height 10-20 ft.: sts. violet, almost black the 

 first few months, changing the second year to a dingy 

 yellow or brown: Ivs. variable in size, 2-6 in. long, Yy- 

 \\A in. wide, the larger Ivs. borne on young shoots or 

 lower branches; they are sharply serrate, and have a 

 well-defined purplish petiole. China and Japan. 



DB. Sts. striped with yellow and green. 



23. P. Castilldnis, Hort. (B. Castilldnis, Hort.). 

 Height 10-20 ft. or more: sts. zigzag, striped golden 

 yellow and green, the colors alternating at the nodes: 

 Ivs. sparingly striped with yellowish white, variable in 

 size, usually 3-6 in. long, &-1 *A in. wide, serrate, the 

 teeth being especially prominent on one edge: If .-sheaths 

 topped by a whorl of dark brown or purple hairs. Japan. 

 Both beautiful and uncommon. 



BBB. Sts. green, yellow, or yellowish. 



c. Plants tall, i.e., more than 5 ft. high. 



D. The internodes very short at the base of the culms. 



24. P. aftrea, A. & C. Riviere (B. aurea, Hort.). Height 

 10-15 ft.: sts. yellowish, often brilliant in color, the 

 internodes at the base remarkably short: Ivs. narrowed 

 from near the base to the apex, minutely and regularly 

 serrate on only one border, usually 2-4 in. long and 

 %in. wide, but variable, light green, glaucous beneath; 

 sheaths deciduous, marked with purple. China and 

 Japan. Gn. 8:206. A.F. 5:41. Easily recognized by 

 the very short nodes at the base of the culms. 



DD. The internodes at the base of the culms not congested. 

 E. Outline of sts. not conspicuously zigzag. 



25. P.mitis, A. & C. Riviere (B. mitis, Hort., not 

 Poir.). Height 20 or more ft., and said to attain 60 ft. 



in its native 

 soil: sts. deep 

 green at first, 

 eventually yel- 

 low : internodes 

 at the base not 

 conspicuously 

 short : Ivs. vari- 

 able, usually 2-4 in. 

 long and %in. wide, 

 light green, serrate on 

 only one border; 

 sheaths deciduous, 

 marked with purple. 

 China and Japan. Gn. 

 17:44. Readily dis- 

 tinguished from P. 

 aurea by the long inter- 

 nodes at the base of 

 the culms. 



26. P. Quflioi, A. & 

 C. Riviere (B. Qullioi, 

 Hort. B. Mazelii, 

 Hort.). Height 20 or 

 more ft., and under 

 favorable conditions up 

 to 70 ft. : sts. arched, green or yellowish, bearing unusu- 

 ally long branches: Ivs. remarkably large and broad, 

 the largest 8 in. long, 1% in. wide, conspicuously serrate 

 on one edge, dark green, often spotted with brown, 

 very glaucous beneath: If. -sheaths pinkish brown, 

 deeply mottled with purple spots. China and Japan. 

 Rare and unusually attractive. 



27. P. Henonis, Mitford (B. Hendnis, Hort.). 

 Height 10-15 ft.: sts. arched, bright green, eventually 

 yellowish, the surface slightly roughened: sheaths yel- 

 low-brown, early deciduous: Ivs. 2-3 in. long, a little 

 under J^in. broad, narrowed below the middle to the 

 base, long-attenuate at the apex, bright green; lf.- 

 sheaths often purplish, the ligule fringed with purple 

 hairs: internodes 5-6 in. long near the base and middle 

 of the culm, grooved with a double furrow. Japan. 

 Wonderfully graceful and eminently hardy. 



EK. Outline of sts. conspicuously zigzag. 



28. P. viridi-glaucescens, A. & C. Riviere (B. viridi- 

 glaucescens, Carr.). Height 20 or more ft., and under 

 favorable conditions up to 60 ft.: sts. zigzag, arched. 



r 



459. Arundinaria Fortune!, 



