Tas. 6494. 
ONCIDIUM  pasysryze. 
Native Brazil. 
Nat. Ord. Oncu1pEx.—Tribe VanpDEm. 
Genus Oncipium, Swartz; (Lindl. Fol. Orchid. Oncidium.) 
Onciprum (Tetrapetala) dasystyle; pseudobulbis breviter ovoideis compressis 
demum creberrime longitudinaliter sulcatis, foliis 2 lineari-lanceolatis subacutis 
carinatis, scapo gracilt paucifloro, bracteis parvis acutis, floribus gracile pedi- 
cellatis, sepalo dorsali petalisque subsequalibus elliptico-lanceolatis acuminatis 
flavis purpureo maculatis, sepalis lateralibus paullo majoribus labello suppositis 
ad medium connatis pallide virescentibus, labelli ampli lobis lateralibus parvis 
triangularibus terminali dilatato reniformi undulato membranaceo, callo basilari 
magno cordiforme valde convexo purpurascente basi utringue callo minuto 
elongato instructo, columna apicem versus alata lateribus ungueque labelli 
puberulis. 
O. dasystyle, Reichb. f. in Gard. Chron. 1873, p. 293 et 432. 
A very elegant plant, a native of the Organ mountains in 
Brazil, whence it was imported by Messrs. B. F. Williams, 
of the Paradise Nurseries. Its near allies are the O. citrinwm 
(Tab. 4454), O. bifoliwm (Tab. 1491), and O. fleauosum 
(Tab. 2203), all of which differ in the form of the labellum, 
its crests, and in other conspicuous characters. In its 
lateral sepals being united only below their middle, it 
forms a transition between Lindley’s two great sections of 
Tetrapetala and Pentapetala. ee 
The specimen here figured was kindly communicated by 
Mr. Bull. 
Drscr. Pseudo-bulbs one to one and a half inch long, 
almost elliptic, with rounded ends, which are truncate at 
the insertion of the leaves, slightly compressed, green, 
edges obtuse, young quite smooth, old longitudinally 
grooved with obtuse ridges. Leaves four to five inches 
long by one broad, linear-lanceolate, subacute, keeled, 
bright green. Scape very slender, six to seven inches 
long, with a few distant small acute bracts. taceme two- 
May Ist, 1880. 
