ONCIDIUM. (16) TETRAPETALA BARBATA. 
* 47. 0. barbatum. LO., p. 200. Coll. Bot. t. 27. 
(A) verum. —en and petals cinnamon-brown. Middle lobe of lip very 
shart 2 
Oo. microglossum, Klotzsch, in Allg. Gartenz., 1855, p. 234. 
(B) ciliatum, Sepals and petals cinnamon-brown. Middle lobe of lip 
apiculate and as large as the side ones, 
O. ciliatum, ZO. p. 200. B. R. &. 1660, 
; um. 
34. 
(C) limbatum. Sepals and petals cinnamon-brown, spotted, ed a — 
yellow border. Centre of the lip very large, circular, and bright yell 
_”) fi mbriatam. Sepals and petals dull brown, Middle ie a lip 
larger than the lat 
O. fimbria‘ ag Bina. 16 
“6 ciliolatum. 
subciliatum. 19a 2 
wae in +: Marine America; A, Braztr—Gardner, Swainson ; 
razil— 
offmannsege, Luschnath ; C, Guatemala—Rchb. 
f. in litt.; D, Brazil—Hoffgg. (v. v. ¢. et s. sp.) 
With the celia of Prof. Rehb, : have been able to settle on a more 
sati sesin the limits of this difficult species. It is oe that it 
varies muc the magnitude and form of the middle lobe of th lip ; and 
— the 0. qian of the “G, et - 0.” is nothing more than a aie 
. barbatum by Sir W. Hooker, in the “ Coll Botanica,” 
Both have the five- obed crest so common in the © order, with : an a Poe 
or two. ‘um of * Paxt. Fl. Gade en” and has jus 
been mentioned under O. trichodes. ge varieties rh and J), of which T- ets 
only — gs. ee kindly sent me by Mr. Rehb., ere urther 
examination, particul ly C, sccaiy as regards the condition of their crest. 
Copies of rife s hvawinan from the same invaluable uctastindont, are my 
authority for the synonyms under 
* 48. 0. micropogon. ch. Bonpl. Ap.1, 1854! Xenia ined. 
(A) oo —_— with b 
O. dentatum, Klotzsch, im » Allg. Gartenz. 1855, p. 234. 
(B) ebrysopterum, ftchb. f. Flowers all yellow 
talum. Klotzsch in Allg. Gartenz. ‘Best: I, 1855, 
Wild in b.) 
- (v. flores 3 s. comm. cel. Rehb 
Certainly different from the preceding in its a flowers, with the lateral 
nited ir len; flat obtuse petals, 
aad i the 
pe trig in form those of 0, regis = pate Te the synonym I debted 
Rehb. I have not seen a wild specimen. a 
49. OQ, macropetalum. Lindley, Sert. Orch. sub t. 48. 
at (A) pos restos and ‘seemed — with brown ; lateral lobes of lip very 
a) ¢ le pliant Sepa and tals much smaller, oured ; 
lateral lobes of lip linear, obtuse, acinac if pm tha nti gees 
Wid; nm Baws cahes 4359 ; i Stine those 
Weddell, No. 40; Bortvia, in the alge of Chiquitos-—hb. 
“deat (v. 8. sp. B, in hb. Mus. ar.) 
i The general appearance of A is that of a of 
«OO. flexuosum ; ‘the petals are neatly as large as the li, oo wis aauiier at 
