rather acute, coriaceous, solitary /eaf, four to five inches long, 
without visible nerves. From the base or axil of this leaf the 
slender, jointed, erect scape arises, about a foot high; sheathed 
with a brown scale at every joint, terminated with four, spread- 
ing, white, graceful, fragrant flowers. Ovary long, pedunculi- 
form, subtended by a subulate dract, about half its length. Se- 
pais spreading, linear-oblong, rather acute. Petals oblong, nearly 
twice the width of and longer than the sepals, waved, much 
spreading. zp about equal in length with the petals, pure 
white, as is the rest of the flower, but with a stain of yellow in 
the disc, which again at the base is deep purple,—oblong, 
three-lobed, veined in the middle and slightly downy on the 
surface ; the lateral lobes are incurved; the intermediate ones 
oblong, acute, recurved towards the apex, acute, waved. Column 
furrowed in front. Axther-case hemispherical. Pollen-masses 
four in each anther-cell. 
Fig. 1. Labellum. 2. Column. 3. Pollen-masses. 
