Tab. 6319. 
DENDROBITJM crystallinum:. 
Native of Birina, 
Nat. Ord. Orchide^e. — Tribe DendrobiejE. 
Genus Dendrobium, Swartz. ( Lindl . Qen. et Sp. Orchid, p. 74.) 
Dendrobium (Eudendrobium) crystallinum ; caule tereti crassiusculo, Vagin is 
membranaceis pellucidis arete appressis striatis tecto, foliis disticliis lineari- 
lanceolatis acuminatis membranaceis, racemis ad nodos brevibus 2-floris, 
pedunculo perbrevi, bracteis ovato-lanceolatis, floribus 2-poll, diametro, albis 
apicibus foliolorum roseis labellique disco aureo, sepalis petalisque ovato- 
lanceolatis patentissimis marginibus recurvo-undulatis, labello orbiculato 
breviter unguiculato, lamina explanata marginibus basin versus inflexis centro 
disci et ungue pilosulis, mento obtuso, colunma brevissima, antliera elongata 
obtusa, papillis crystallinis operta. 
D. crystallinum. Rclib. f. in Oard. Cliron. 1868, p. 572; Xen. Orchid, vol. ii. 
p. 210, tab. 193,/ I. 
This is another of the beautiful Dendrobes, with which 
British Birma abounds, and for which Horticulturalists are 
under lasting obligations to the indefatigable exertions of 
Col. Benson, and the Bey. C. Parish. It belongs to the 
same group of the genus, called Eudendrobium by Bindley, 
to which the well-known D . Pierardi , and transparens belong, 
together with D . Bensonice , Wardianum , and some twenty 
other Indian species. Prof. Beichenbach, who first pub- 
lished it about 10 years ago, spoke then with confidence of 
its distinctness, and there is no reason to doubt the correct- 
ness of his decision, though it must be confessed that the 
number of Birmese species and the very close relationship of 
many of them, suggests the possibility of hybridisation or 
great variation. A glance at the figure of JD. Bensonice (tab. 
5679), and the remarks made under it, illustrate this point. 
Prom all its congeners, however, E. crystallinum may be 
distinguished by the shape of its elongated anther-case, which 
is covered with very prominent crystalline papillae. 
SEPTEMBER 1ST, 1877. 
