inch broad, narrowly oblong-ovate, minutely three-toothed at 
the tip, very coriaceous, keeled at the back, grooved in front, 
narrowed into the slender petiole. Scapes one-flowered, shorter 
than the leaves, very slender; bract short, obtuse, placed 
below the ovary and shorter than it, whence the flower 
appears pedicelled, Flowers white, with pale green along 
the tube opposite the sepaline lobes, and bright yellow tails. 
Perianth-tube narrowly campanulate, gibbous below at the 
base ; lobes rounded, suddenly narrowed into slender 
recurved tails which are almost twice as long as the tube. 
Petals oblong, very shortly clawed, obtuse. Lip straight, 
yellow, linear-oblong, with an obtuse claw at the tip, and 
two keels on the face, which are rather dilated in the 
middle. Column green, toothed at the tip. — J. D. H. 
Fig. 1, Top of scape, bract, and flower ; 2, top of ovary, petals, lip, and column ; 
3, lip and column ; 4, the same with that lip deflexed : — all magnified. 
