slightly reflexed wings. Anther-case ovate, acute, white. 
Pollen masses two, ovate, two-lobed at the back, fixed to a 
linear, white pedicel, which has a small gland at the base. 
A native of Demerara, where it was discovered growing 
upon trees, by C. S. Parker, Esq. and from plants sent by 
him to the Liverpool Botanic Garden, which flowered in 
June, 1827, the accompanying figure was taken.: 
_ The absence of the bright yellow of the blossoms of 
many Oncrp1a, is compensated in this by great delicacy ; 
the ground of the flower being pure white. There are a few 
orange-coloured spots near the base of the large, four lobed 
lip, and the wings of the column are rose-coloured. In 
habit it approaches the Ionrp1um of Exotic Flora (Ionop-: 
sis of Kuntu.). 
& 
Fig. 1. Back view of a Flower. 2. Front view of ditto. 3. Column and 
base of the Lip. 4. Column, from which one Wing and the Anther-case have 
ma 5. Anther-case. 6, Pollen Mass.—All more or less mag- 
nified. : 
