468 



DENDROBIUM 



DENDROBIUJl 



A. Inflorescence racemose {fl. usually solitary in Jeu- 



kinsii). 



B. Racemes densely flowered. 



c. Petals pinkish or purplish. 



1. secundum, Wall. Pseudobulbs terete, nearly 2 ft. 

 long: Ivs. ovate-oblong; fis. all on one .side of peduncle, 

 crowded ; petals sinalltT than sepals, rose-mauve; la- 

 bellum paler, with au apical blotch of orange. Sumatra. 



2. cumuUtum, Lindl. Pseudobulbs tufted, slender, 

 erect, about IS in. long: Ivs. oblong: fls. 1 in. across, 

 purplish, suffused with white; inflorescence globose. 

 Burma. 



CO. Petals white. 



3. D6arei, Reichb. f. Fig. 690. Pseudobulbs tall: Its. 

 about 2 in. long, oval-oblong : fls. about 2 in. across, 

 white; sepals lanceolate; petals nearly orbicular; label- 

 lum oblong, with a pale, yellowish green blotch in the 

 throat. Philippine Isls. Gn. 54, p. 237. G.C. III. 24:193. 



4. leucolophdtum, Reichb. f. Pseudobulbs stout, erect: 

 racemes many-Hd.: fls. white, lateral lobes of labellura 

 greenish; midlobe narrowly obloug. Malay archipelago. 



5. Palpebrae, Lindl. Pseudobulbs clavate, 4-angled: 

 Ivs. oblong-lanceolate : raceme loosely fld. : fls. white, 

 with a yellowish disk near the base of the labellura. 

 Burma. 



6. crumenitum, Swartz. Pseudobulbs erect: Ivs. ovate- 

 oblong: raceme terminal, inany-fld.: sepals and petals 

 ovate; labellum white. Malay archipelago. 



7. thyrsiflbrum, Reichb. f. Pseudobulbs terete, 

 jointed: Ivs. obloug: racemes pendulous, ample: sepals 

 and petals white ; labellum yellow, downv-pnbescent. 

 Burma. B.M. 5780. I. H. 22:207. Gn. 50,"p. 28. A.F. 

 3:155. F.E. 9:329. J. H. III. 31:229. G.C. II. l.'>:463.- 

 Much like the next, and by some united with it. 



r^^^^^'^^'-^i/''^"^. 



690. Dendrobium Deare: 



ccc. Petals yellow. 

 8. densifldnim, Wall. Pseudobulbs jointed, about 15 

 in. high: Ivs. oblong : racemes pendulous, ample: fls. 

 1J4-2 in. across ; sepals and petals yellow ; labellum 

 orange-yellow, downy-pubescent. Nepal. B.M. 3418. 

 G.C. II. 17:737; III. 14:123 and 24:185. 



Var. Soliroederi, Hort. (var. album, Hort.), has whitish 

 sepals and petals. A.G. 20:5. 



9. GriKithiAuum, Lindl. Pseudobulbs clavate : Ivs. 

 lanceolate-oblong : fls. in drooping, flexuose racemes ; 

 petals ciliate, yellow. Burma. 



10. Firmerii, Past. Pseudobulbs round, attenuate at 

 base, thickening above : Ivs. oblong : racemes ample, 

 pendulous; fls. 2 in. across, tinged with pink; throat of 

 labellum orange-yellow ; sepals oblong ; petals oval. 

 Khasia Hills. B.M. 4059. — Var. albiflorum, Hort. (var. 

 album of catalogues), has white fls., the Labellum 

 marked with yellow. F.S. 23:2461. Var. avireo-flavum, 

 Hort. [aurea of catalogues %). Fls. golden yellow; disk 

 of labellum deeper yellow. 



11. sulcatum, Lindl. Pseudobulbs clavate, com 

 pressed: Ivs. ovate-oblong: racemes 10 or more fld. : fls 

 yellow, crowded. Khasia Hills. B.M. G962. 



12. bicameratum, Lindl. (D. brevifldrum of cata- 

 logues). Pseudobulbs fusiform or clavate, about 18 in 

 long: Ivs. elliptic, oblong: fls. yellow, marked with red 

 clustered on a short rachis, forming a capitate raceme, 

 Sikkim. 



13. erythrox^nthnm, Reichb. f. Pis. in dense racemes 

 yellowish striped with crimson-purple. Philippine Isls 



BB. Hacemes loosely flowered. 

 C. Pseudobulbs one-leaved. 



14. aggreg4tum, Roxb. Lvs. oblong, coriaceous, at the 

 summits of ovate pseudobulbs : fls. yellow, numerous, in 

 lateral drooping racemes; sepals ovate; petals broadly 

 ovate; labellum broader than long, with orange throat; 

 disk pubescent. Burma. B.M. 3643. — Var. mijus, 

 Hort., is a larger-fld. form. 



15. J^nkinsii, Wall. Pseudobulbs short, compressed: 

 lvs. oblong, coriaceous: fls. orange-yellow, solitary ; se- 

 pals oval; petals broadly ovate. Assam. B.R. 25:37.— 

 Very like D. aggregatum. 



C'C. Pseudobulbs leafy at summit. 



D. Flowers yellow. 

 E. Labellum pectinately fringed. 



16. Brymeriinum, Reichb. f. Pseudobulbs jointed, 

 slender, about 2^2 ft. high, sometimes much shorter: 

 lvs. several, lanceolate: fls. fleshy, golden yellow; upper 

 sepal oblong; petals and lateral sepals vei'y similar; la- 

 bellum reflexed at apex, disk downy; margin provided 

 with a conspicuously long and pectinate fringe. Burma. 

 B.M.6383. A.P.6:609. G.C. II. 11: 475; 16: 689. 



EE. Labellum not pectinately fringed. 



17. chrysotdxum, Lindl. Pseudobulbs clavate : lvs 

 several, 4 in. long, coriaceous: racemes arching, many- 

 fld. : petals and sepals about equal, golden yellow ; la- 

 bellum of similar color, deeper in the throat. Burma 

 B.M. 5053. G.F. 5:533. Gn. 48, p. 239.- Var. suavissi 

 mum, Hort. Pseudobulbs stout : fls. delightfully fra- 

 grant ; labellum with blotch deeper-colored than in the 

 type. Burma, 1847. 



DD. Flowers greenish. 



18. macrophyllum, Rich. {D. Veitchidnum, Lindl.). 

 Pseudcibulbs clavate, compressed: lvs. oblong: racemes 

 many-fld.: tls. large; sepals greenish, hairy behind; 

 petals whitish ; lateral lobes of labellum greenish, 

 shaded with purple; midlobe greenish, with purple- 

 dotted lines. l.H. 35:57. -Sold as D. Vcitchianum, not 

 D. macrophyllum of gardens (see D. superbum). Java. 

 Dayftnum, Hort., is said to be a better form than the 

 type. 



ccc. Pseudobulbs more or less leafy to base. 

 D. Flowers white. 



19. FytcM4num, Batem. (D. barbdtulum, Hort.). 

 Pseudobulbs slender: lvs. oblong -lanceolate, acute: 

 racemes 10-15-rtd. ; fls. white; lateral lobes of the label- 

 lum tinted with purple. Burma. B.M. 5444. 



20. .MacJ4rlanei, Reichb. f. Fls. several inches across, 

 white; labellum marked with purple, 3-lobed; sepals 

 lanceolate; petals narrowly ovate-lanceolate, acuminate. 

 New Guinea. 



