DENDROBIUM 



DD. Flowers purple. 



21. sup^rbiens, Reichb. f . Pseudobulbs eylindric : Ivs. 

 linear-oblong: racemes remotely fld. : fls. rich magenta- 

 purple; sepals and petals undulate-margined; labellum 

 similar in color, 3-lobed, lateral lobes incurved; disk 

 with raised -white lamellse. North Queensland. 



22. bigihbum, Lindl. Pseudobulbs elongated, erect, 



1 ft. or more high: Ivs.obiong-lanceolate: racemes sub- 

 erect: fls. magenta-purple; sepals oblong-lanceolate; 

 petals spreading, reflexed ; labellum 3-Iobed, lateral lobes 

 incurved, deeper colored than the petals, with a white 

 crest. Torres Straits. B.M. 4898. I. H. 30:476. 



23. Plial8En6p3is, Fitzg. Pseudobulbs tall, terete : Ivs. 

 lanceolate: fls. on slender pedicels, pale mauve; sepals 

 lanceolate, spreading, paler than the petals ; petals 

 orbicular, spreading ; labellum 3-lobed, lateral lobes 

 incurved. Australia. B.M. 6817. A.G.20:5. G.F.5:440. 

 A.P. 13:1224. For var. Schroederianum, see G. C. III. 

 10:642-3; 15:339. R.B. 23:85. A.F.10:401. For var. 

 hololetica, see G.C. III. 18: 397. J.H. III. 31 : 149.-One of 

 the most useful Dendrobiums for cut-flower purposes. 

 There are many fine varieties, pale in color or even 

 white. 



DDD. Flowers \jellow. 

 E. Labellum not slipper-like. 



24. clavitum, Lindl. Pseudobulbs eylindric, 20 or 

 more in. long: Ivs. ovate-lanceolate: racemes few-fld. : 

 fls. orange-yellow ; labellum brighter yellow, with a 

 maroon blotch, denticulate on the margin. Nepal. 

 B.M. 6993. 



25. Hmbriatum, Hook. Pseudobulbs 2 or more ft. high, 

 slender: Ivs. lanceolate, dark green: racemes lax, pen-^ 

 dulous: sepals and petals orange-yellow, ciliate; label- 

 lum yellow, with an orange-yellow throat, margin irregu- 

 larly fringed. Nepal. G.C. III. 2.'.: nil.-,. V.nv. oculatum, 

 Hort. (ZJ.i'n'j-^oHi, Past.), has smnll. r il .. iiii a L.-per 

 coloredblotchonthelabellum. B.M, 1 ! i: I 1 :'.i7. 



26. luacitum, Lindl. Pseudobull.- .. ,: i i.. ;aly 

 so: Ivs. ovate-lanceolate: racemes v.iiL a _i_'.:;i„' r;iihis, 

 drooping: fls. yellow, with 2 maroon spots on the label- 

 lum. Sikkim, Himalayas. 



27. Hookeriinum, Lindl. (D. Chrysdtis, Reiohb. f.). 

 Pseudobulbs slender, swollen atthe base: Ivs. lanceolate 

 to oblong: fls. large, in pendulous racemes, golden yel- 

 low ; labellum with 2 deep maroon blotches, margin 

 fringed. Sikkim. B.M. 6013. J.H. HI. 33: 221. 



28. Gibsonii, Paxt. Lvs. lanceolate: racemes from the 

 upper nodes of the stems: fls. 5 or more, yellow, with 

 maroon spots on the labellum. Khasia Hills. 



29. dix4nthum, Reichb. f . Pseudobulbs clavate, about 



2 ft. long: lvs. linear-lanceolate: fls. yellow, in racemes 

 from the upper part of the stems. Burma. 



EE. Labellum slipper-like. 



30. moschatum. Wall. Pseudobulbs several ft. high, 

 leafy from the base : lvs. oblong-linear, striate: fl.-stem 

 radical, longer than the pseudobulbs: racemes pendu- 

 lous: fls. 2-4 in. across; sepals and petals about equal, 

 oblong, orange-yellow; labellum inflated, colored like 

 the petals, with crimson markings at the base. Burma. 

 B.M. .3837. Var. Calceolaria, Hort. (D. C'alceolus, B.ort.). 

 Fls. smaller, orange-yellow. 



31. Dalhousiinum,Wall. Pseudobulbs elongated, rod- 

 like, spotted with purple when young: Ivs. clasping, 

 narrowly ovate : racemes pendulous, lax : fls. large ; 

 sepals spreading, yellow, tinted with rose ; labellum con- 

 cave, orbicular, blotched at base with maroon-purple. 

 Burma. B.R.32:10. I.H.28:423. Gn. 48:1032, p. 223. 

 G.C. III. 21: 157. 



AA. Inflorescence not racemose. 



B. Pseudobulbs black-hairy. 



C. Leaves deciduous. 



32. caiiniferum, Reichb. f . Pseudobulbs subeylindric, 

 6-9in. long: lvs. narrowly oblong: fls. IJ^in. across, soli- 

 tary or in 2's or 3's, near apex of stem; sepals lanceo- 

 late, acute, strongly keeled at back, pale fawn-yellow, 

 fading to ivory white; petals ovate, white; labellum 

 3-lobed, spurred at base, side lobes triangular, reddish 



DENDROBIUM 



469 



orange, midlobe spreading, undulate, tufted, with long 

 woolly hairs along the veins on the upper surface, red- 

 dish orange at base, usually white at apex. Burma. 

 B.M. 6715 (var. Wattii). 



33. cru6ntum, Reichb. f. Pseudobulbs erect, terete, 

 1 ft. long, swollen at base: lvs. elliptic-oblong, decidu- 

 ous: fls. solitary or in pairs, l'.2-2 in. across; sepals tri- 

 angul.-ir-ovate, keeled at back, pale green, longitudinally 

 veined with darker gieen; petals linear-acute, colored 

 like the sepals; labellum 3-Ii.ibed, lateral lobes oblong, 

 erect, crimson-scarlet, midlobe ovate, apieulate, pale 

 green, with red border, and a large warty crest, below 

 which are 5 raised red lines, the 2 outermost being most 

 developed. Malay Isl. G.C. III. 18: 91. 



34. longiobmu, Lindl. Pseudobulbs slender, 8-12 in. 

 high: lvs. linear-lanceolate, 2-2'2 in. long: fls. solitary 

 or in 2's or 3's, not fully expanding; sepals and petals 

 sub-equal, elliptic-oblong, transparent white; labellum 

 funnel-shaped, anterior portion ttmbriate, white, with a 

 broad raised orange-red central band, with divergent 

 lateral streaks of same color; spur slender. Burma. 



cc. Lvs. not deciduous. 



35. formdBum, Roxb. Pseudobulbs stout, erect: lvs. 

 ovate-oblong: peduncle from the summit of the stem, 

 3-o-fld.: fls. 3-4 in. across, white; sepals oblong-lanceo- 

 late, apieulate; petals nearly orbicular; labellum large, 

 the small basal lol>ps clasping the column, throat with a 

 yellow band, wiijili i'.\p:iiids in a large yellow blotch 

 near the disial iii.l. Kliasia Hills. B.R. 25:64. Var. 

 gigantdum, Hort. FN. uMa^ure 4-5 in. across. G.C. III. 

 24:471. Gng. 1: ll.S-',i. F.E. 10:1240. 



36. infundibulum, Lindl. Fls. white; sepals spread- 

 ing, elliptic-oblong; petals broad; labellum large, with 

 an orange-yellow blotch in the throat; basal lobes infold- 

 ing the column. Burma. B.M. 5446. I.H. 21:172. Var. 

 Jamesianum, Hort. Pseudobulbs stouter and more rigid : 

 labellum of flower differently formed, especially the side 

 lobes, which are roughened on their inner surface; disk 

 cinnamon red. 



37. Dracdnis, Reichb. f, Pseudobulbs stout, erect, 

 12-18 in. long: lvs. lanceolate, 3-4 in. long: fls. in fas- 

 cicles from the uppermost joints of the stem, IK in. in 

 diam., ivory white, striped with orange-red at base of 

 labellum; sepals lanceohite, acute; petals oblong-lanceo- 

 late, reflexed at tips ; labellum 3-lobed, lateral lobes 

 small, rotund; midlobe oval, oblong, crisped and mi- 

 nutely toothed on the margin, with 3 longitudinal raised 

 lines. India. B.M. 5459. 



38. scabrllingue, Lindl. Pseudobulbs stout, erect, 

 slightly attenuated below, 9-12 in. high : lvs. oblong: 

 fls. I'oin. in diam., in fascicles from the uppermost 

 joints of the stems; sepals and petals similar, sub-equal, 

 ovate-lanceolate, ivory white; labellum 3-lobed; lateral 

 lobes oblong, erect, yellow-green; midlobe oval-oblong, 

 reflexed, yellow, with 5-7 orange-yellow sunken lines on 

 disk; spur small, conical. Burma. 



39. L6wii, Lindl. Pseudobulbs slender: sepals and 

 petals pale yellow; labellum marked on the side lobes 

 and midlobe with crimson. Borneo. B.M. 5303. F.S. 

 23:2395. 



BB. Pseudobulbs not black-hairy, upright. 



C. Leaves persistent. 



D. Petals and sepals white. 



40. Jap6mcum, Lindl. {D. monilifdrme, Swartz). 

 Pseudobulbs tufted, 6-12 in, long, attenuated below: 

 lvs. linear-lanceolate, acute: fls. fragrant, IK in. across, 

 solitary or in pairs, white, dotted or speckled with 

 mauve at the base of the labellum, S. Jap. 



DD. Petals and sepals yellow. 



41. capillipes, Reichb. f. Dwarf, tufted plants, with 

 fusiform pseudobulbs: Ivs. lanceolate: fls. in pairs or 

 solitary, golden yellow, with a deeper blotch on the 

 labellum. India. 



42. lut^olum, Batem. Pseudobulbs erect, about IK ft. 

 long: lvs. linear-lanceolate, acute: fls. about 2 in. across, 

 vellowish or cream-white ; labellum with a few reddish 

 lines. Burma. J.H. IIL 32:143. G.C, II. 19:340 (var. 

 chlorocentruvi) , 



