TETRAPETALA BARBATA. C37) ONCIDIUM. 
base of a middle vii with a broad plate on each side. Bb Ss pro roably a a 
asi sp. ; but I dare not establish it on the vere before m 
sisting of a sketch and a bad dried s _— n, with tw ait-dounn 
toate, Sri is a prem 3 plant, the little panicle no sheipaniin. 8 more than four or 
five flowers ; the ¢ is unascertainable, but seems to consist inter alia o 
a pair of horn- like seeing 0 ubercles. I am not even sis ‘that the oe 
from Boli via and the sketch from Matto Grosso really basse) to the sam 
. 
§ 5. TETRAPETALA MACROPETALA. 
ANALYSIS OP THE SPECIES, 
— pea sequales 
guic. erista poe ia eo fimbriata . . 50, Widgreni. 
erista bie . + SI, cuneatum. 
Seapi foliis ma multd longiores. 
lum integrum. 
lamellis 4 acutis. Volubile se eS a so es, COMMACHEI 
cristé transversa ! Wee Gea ee al coy. Eee CEES 
Labellum t 
1 
rilobum 
ac, nee Tinearibus Fara gene 
— Kir e  ey e e 
neu. obtusa 5 ei a gs a ee, Cnn 
~ a . at. aurictlzoform 
maximee anil ide, en pan pes ee PE NCR ICE TS, 
minute. : 
. auriculze obsolet Se eee eee Veh eS 
crista inappendiculata divergenti-biloba (bi- 
cruris). 
clinandr. erispo-margi 
petala retusa. Alzeec.apicales . . . 58. amictum. 
——_. acuta. basilares . . . . 59. tripterygium. 
clinandr. immarginatum, ale acinaciformes 60, Forbesi. 
. subrotundum. Ale maxime. . . 61. crispum. 
* . pectorale. 
istee verrucis circumstanti gyratis . . 63. curtum. 
64. hematochrysum. 
50. O. fens 
O. racemo simplici erecto folio sequali, sepalo dorsali petalisq. 
cuneatis ‘eaves repandis lateralibus semiconnatis acutis, labello 
longé unguiculato secus unguem et ultra dentibus crebris biseriatis 
aucto laciniis lateralibus linearibus incurvis intermedio cuneato 
bilobo, columnz alis pubescentibus obtusis falcatis. 
Wild in Brazin; Minas Geriies—Widgren, 774, (v. s. sp.) 
Leaf solitary, ‘irc to four inches long, narrowly = Raceme eight- 
flowered. pega alae This remarkable species can only be 
Oct. 18, 1855. 
