three-fourths inch broad, rigid, recurved, deeply bifid at the 
tip; lobes unequal, subacute, nearly straight, dull green, 
shining. Raceme five inches long, ascending, five to six 
flowered. Flowers two inches diameter, pure white, with a 
few orange markings at the base of the lip. Perianth seg- 
ments of nearly equal length, with the lip longer, somewhat 
reflexed. Dorsal sepal oblong, spathulate, two lateral much 
broader, obliquely ovate, subacute. Petals spathulate. Lap 
with a two-lobed base, the lobes auricled; callus quadrate, 
small, two-lobed, with a semi-lunate yellow band, with orange 
ciliate edges behind it; lamina of the lip nearly as broad as 
the base, contracted in the middle, with two short diverging 
terminal lobes, and five ridges on the disk. Spur short, 
obtuse, velvety inside. Column short, stout, obtuse.—/. D.H. 
Fig. 1, Lip.—magnified. 
