" I am very happy ia^edicating this very distinct species 

 to my valued friend Capt. Jenkins, to whom this garden, the 

 cause of botany, and' science generally, are deeply indebted. 



"The flowers are larger than those of D. aggregatum of 

 Roxburgh, to which it bears a slight resemblance." 



The species shews in a striking manner the impropriety 

 of generically separating the pseudo-bulbous Dendrobia from 

 those with slender stems, notwithstanding the dissimilarity 

 in their appearance. Here we have a plant with the pseudo- 

 bulbs consisting, in the majority of instances, of a single 

 internode, hardened, become four-cornered, and as dissimilar 

 as possible from the same part of the stem of Dendrobium 

 Pierardi ; but in D. aggregatum, figured in this work, 

 t. 1695, several internodes (3) together constitute a body 

 altogether intermediate in nature between a pseudo-bulb 

 and ordinary stem, and similar transitions from one to the 

 other occur in D. densiflorum, fol. 1828, and D.Griffithianum, 

 all which are so nearly allied to each other tliat a person 

 unacquainted with all of them may possibly mistake one 

 for the other. To prevent this the following distinctions in 

 the labellum will be found certain. 



D. Jenkmsii. Labellum broader than long, repand, 

 slightly two-lobed, shaggy, serrated. 



D. aggregatum. Labellum broader than long, scarcely 

 wavy, undivided, downy only near the base. 



D. densiflorum. Labellum cordate, repand, two-lobed, 

 reflexed at the point, serrated. 



D. Griffithianum. Labellum ovate, slightly hastate, 

 serrated, downy, except near the edges. 



This species is more difficult to cultivate than those 

 kinds with long free-growing stems. It is frequently seen 

 in an unhealthy state, owing to its being grown in a pot, 

 and subjected to a uniform high degree of temperature. 

 The best way to insure its success, is, to tie it to a block of 

 wood with a piece of turfy peat attached to it, and suspend 

 it from the rafter of the house. There it must be well 

 syringed at least twice a day, so long as it continues to grow, 

 and afterwards it may be removed to a cooler house. In 

 fact it never requires so much heat as those species with 

 long trailing stems. 



It is propagated in the usual way. 



