concealed by the membranous sheath. Leaves few, on sepa- 

 rate stems from the flower, linear, acute or emarginate, two 

 to three inches long, one-third of an inch broad, keeled. 

 Flower produced at the joints, usually two or three on a 

 common peduncle, rarely solitary ; bracts and bracteoles very 

 small, acute, pale green, as are the peduncles and pedicels. 

 Flowers two inches in diameter, snow-white, except the lip, 

 which has a broad, deep golden-yellow disk, and two purple 

 spots near the base. Sepals oblong, obtuse. Petals much 

 broader, almost orbicular. Lip orbicular, contracted to a 

 short, convolute neck; edges denticulate, surface concave, 

 finely tomentose. Column very short. — J. I). H. 



Fig. 1. Column and mentum. 2. Lip: — magnified. 





