326 orchid-grower's manual. 



D. AUREUM, Lindlcy. — This is a very distinct and desirable species, and 

 one that should be grown by every one who is fond of sweet-scented flowers. 

 It has terete-clavate pendent stems, which flower after the oblong acute leaves 

 have fallen, producing two- or three-flowered racemes ; the sepals and petals 

 are cream-coloured or yellow (-D. rlwmbeum), the lip with a velvety disk, golden 

 yellow streaked and veined with crimson lines, recurved at the tip. These 

 flowers, which are produced from October to March, and last several weeks in 

 perfection, have a most delicious odour compared to that of violets, or of violets 

 combined with primroses. — India; Nepaul, Assam ; Ceylon; Java. 



Via.— Sot. Mag., t. 4708 ; Id., L 4970 (var. IlenshalliO ; Hot. Beg., 1839, t. 20 (var. 

 palUdmii) ; Id., 1843, 1. 17 (ji'hombeum) ; Flore des Serves, t. 842 ; Lem,. Jard. Fl., t. 386 ; 

 Wall. PI. As. Bar., t. 196 ; MHght, Icon. PI. Ind. Or., v. t. 1646 ; Bateman, Second Cent. 

 Orch. PI., t. 150 ; Belchenhaclda, ii. t. 63 ; VeitclCs Man. Orch. PL, iii. p. 20. 



Syn. — D. heterocao'pum ; D. rhombeum, 



D. AUREUM PHILIPPINENSE, Rchl.f.—K gigantic variety of the preceding, 

 having pseudobulbs 1\ to 2 feet long. The flowers are paler than those of the 

 type, and have a single broad purple patch under the velvety disk ; they are 

 also produced in much greater profusion. This variety is not sweet-scented 

 like the type. — Fhilippine Islands. 



D. BARBATULO-CHLOROPS, J?o?/e.— This supposed natural hybrid between 

 D. harbahdwm and B. chlorops has been described by Mr. Bolf e as follows : — " A 

 form has now appeared in the collection of Major-G-eneral E. S. Berkeley, of 

 Spetchley, Bitterne Park, Southampton, which so neatly combines the 

 characters of the two species, that I have no doubt it is a natural hybrid 

 between them. The flower is white, and has the shape of D. harhatulum, yet all 

 the segments and mentum are shorter than in the species, and the latter 

 organ more blunt, as in D. Morops ; the side lobes of the lip are also wholly 

 light green, and the crest broader, as in the same species, but the tuft of hairs 

 closely resembles B. harbatulwm. Briefly it may be described as B. harhatulum, a 

 little modified in shape, with the crest and the side lobes of the lip of B. chlorops. 

 Good specimens of both the parent species from the same collection enable 

 these characters to be easily traced. Its appearance is very interesting, as 

 B. crassinodi-Wardianum is the only other uiidoubted natural hybrid known in 

 the genus" (Gardeners' Chronicle, 3rd ser., 1892, xi. p. 298). — India. 



D. BARBATULUM, Lindley. — A charming epiphyte, well adapted for cutting, 

 growing 1 foot or more in height, and having stifi curved sub-erect stems, 

 terete from a swollen base, the joints covered with membranaceous sheaths. 

 The leaves, which are only seen on the young shoots, are lanceolate acumi- 

 nate. The flowers grow in lateral racemes on slender almost flliform slightly 

 curved peduncles, and are numerous, crowded, secund, with elliptic sepals', 

 lanceolate petals, and an obovate spathulate lip, pure white in every part 

 except the greenish spur. These crowded clusters of white flowers are very 

 effective. It is known from B. Fytchianum, with which it is confounded in the 

 Bat. Mag. plates, by the orbicular petals of the latter plant, and its terminal 

 racemes. Not being a robust grower, it succeeds best on a block, and must have 

 a tolerable rest after its growth is made. — Western Peninsula of India : Concan. 



¥m.—Bot. Mag., t. 5918 ; Paxton, Fl. Gard., iii. p. 113, f. 285. The B. M. plate 5444, 

 labelled iarbatnlmri, is Fytcltiamim. 



