Tab. 6962. 

 DENDROBIUM sulcatum. 



Native of Assam, or the Khasia Mountains. 



Nat. Ord. Obchide^e. — Tribe Epidendbe-E. 

 Genus Dendbobitjm, Swartz; {Benth. et HooJc.f. Gen. PI. vol. Hi. p. 498.) 



Dendbobium (Dendrocoryne) sulcatum; caulibus fastigiatis clavatis leviter cora- 

 pressis protunde sulcatis, foliis subterminalibus late ovatis acutis v. acuminatis 

 laevibus coriaceis, nervis numerosis obscuris, racemis lateralibus breviter 

 pedunculatis multifloris, bracteis minutis acutis, floribus fastigiatis aureis 

 .sepalis oblongis lineari-oblongisve obtusis, petalis sepalis a?quilongis obovatis 

 apice rotundatis, labello late cuneato-obovato v. obcordato in unguem brevem 

 angustato hireuto aurantiaeo intus sanguineo striolato. 



D. sulcatum, Lindl. Hot. Reg. vol. xxiv. (1838), tab. 65. 



D. sulcatum, var. polyantha, Rolfe in Gard. Chron. Ser. 3, vol. i. (1887), p. 607. 



Dendrobium sulcatum was first described and figured by 

 Lindley in the Botanical Register for 1838, from what 

 appears to me to have been a very poor specimen, that 

 flowered in the Duke of Devonshire's garden at Chats- 

 worth. The plant itself is stated to have been received 

 from India, where it was collected by Mr. Gibson, a 

 botanical emissary of his Grace's. Mr. Gibson collected in 

 the Khasia Mountains, and nowhere else in India that I 

 am aware of, whence he sent home a multitude of orchids 

 and fine plants of other Orders. The only other early 

 authority for I), sulcatum is a specimen (so named by 

 Lindley) in the Hookerian Herbarium, marked as from 

 Assam, Griffith; but as Griffith's Assam and Khasia 

 collections were mixed, this specimen may also have been 

 from the Khasia. Lindley's original drawing represents a 

 narrowly oblong leaf, described as three-nerved, but 

 fio-ured as five-nerved, and a clavate stem, with three 

 racemes of three flowers each, characters so different from 

 those of the plant here figured, that Mr. Rolfe has, in the 

 " Gardener's Chronicle " (taking Lindley's figure as the type 

 of D. sulcatum), described that here figured as var. polyantha. 

 A reference, however, to the native specimen, together with 

 the opinions of several experienced orchid-growers, leads 



oct. 1st, 1887. 



