42 
ONCIDIUM pulvinatum. 
The Cushion Oncidium. 
GYNANDRIA MONANDRIA. 
Nat. ord. ORCHIDACEE, $ VANDE&. 
ONCIDIUM. Swartz. 
O. pulvinatum ; paniculá ramosissimá divaricatá, sepalis obovatis lateralibus 
liberis, petalis conformibus acutis, labelli lobis subequalibus intermedio bi- 
lobo undulato lateralibus crenatis rotundatis crispis, disco pulvinato villosis- 
simo, columnz alis rotundatis. Bot. Reg. 1838. misc. no. 115. 
Panicula ramosissima, intricata, glabra, 8-9-pedes longa; axi percur- 
rente rectiusculo penne corvina crassitudine, ramis simplicibus ramosisque 
divaricatis geniculatim flexuosis, internodiis pollicaribus bracteis refractis 
membranaceis acutis pluries longioribus. Flores O. divaricati simillimi, 
lutei in medio sanguineo guttati. 
One of the largest of the Oncidia, vieing with O. altissi- 
mum in stature, its panicle being 8 or 9 feet long, of which 
one of the smaller branches only is represented in the accom- 
panying plate, and resembling O. divaricatum in the struc- 
ture, colour, and size of its flower. It however differs from 
that species in its lip having the middle lobe largest, not 
smallest ; and in the cushion at its base being much more 
villous and equally convex, not divided into equal quarters. 
The lateral lobes of the lip are also crisp in this species, not 
plain, as in O. divaricatum. 
In the specimen before me there is one central axis, in 
the middle, about as thick as a crow’s quill, gently wavy, 
and so weak as to be unable to support its flowers without 
the assistance of neighbouring objects. At regular distances 
from this proceed the branches, which are either simple or 
themselves branched, and zigzag in a.remarkable manner; 
the whole forming an entangled mass of inflorescence. 
It is a native of Rio Janeiro, whence it was sent to Mr. 
