Tas. 6319. 
DENDROBIUM CRYSTALLINUM. 
Native of Birma, 
Nat. Ord. Orcu1pEx.—Tribe DenprosiEe. 
Genus Denprosium, Swartz. (Lindl. Gen. et Sp. Orchid. p. 74.) 
Deyprostum (Eudendrobium) erystallinum; caule tereti crassiusculo, vaginis 
membranaceis pellucidis arcte appressis striatis tecto, foliis distichis lineari- 
lanceolatis acuminatis membranaceis, racemis ad nodos brevibus 2-floris, : 
peduneulo perbrevi, bracteis ovato-lanceolatis, floribus 2-poll. diametro, albis 
apicibus fsbicloitimn 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, columna brevissima, anthera elongata 
obtusa, papillis crystallinis operta. 
D. erystallinum. Rehb. f. in Gard. Chron. 1868, p. 572; Xen. Orchid. vol. ii. 
p. 210, tab. 193, f 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 Rev. ©. Parish. It belongs to the 
same group of the genus, called Zudendrobium by Lindley, 
to which the well-known D. Pierardi, and transparens belong, 
together with D. Bensonie, Wardianum, and some twenty 
other Indian species. Prof. Reichenbach, 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 D. Bensonic (tab. 
5679), and the remarks made under it, illustrate this point. 
From all its congeners, however, L. crystallinum may be 
distinguished by the shape of its elongated anther-case, which 
is covered with very prominent crystalline papille. 
SEPTEMBER lst, 1877. 
