DESCRIPTIVE LIST. 359 



B. Oncidium tricolor. Jamaica . . . . B. M., 4130. 

 Perianth yellowish green striped and spotted with red ; 



lip white, striped with red. 



C. Oncidium triquetrum. Jamaica . . . B. M., 3393. 



SYNS. Cymbidium triquetrum (Willd.). 



Epidendrum triquetrum (Schwartz). 

 Flowers greenish white, marked with reddish purple. 

 Grow on blocks. 



C. Oncidium trilingue. Peru .... Pax. Fl. G., 63. 



Lem. Jard., 217. 



A species much resembling Oncidium serratum. Flow- 

 ers chocolate-brown, edged with yellow. 



C. Oncidium trulliferum. Brazil . . B. R., 1839, 57. 

 Perianth yellow, marked with reddish brown ; lip yel- 

 low, having in the centre the form of a trowel. 



Oncidium unicorne. See Oncidium monoceras. 



C. Oncidium uniflorum. Rio Janeiro . B. R., 1843, 43. 

 Flowers vivid yellow, marked with dull brown ; lip bril- 

 liant yellow j very fragrant. In spite of the name each 

 bulb produces a flower-stalk, carrying two or three flow- 

 ers. 



C. Oncidium unguiculatum. Guatemala. 



Flowers large, yellow, on a long branching spike, pro- 

 duced in winter. 



Oncidium varicosum Lem. Jard., 207, 7. 



See Oncidium Rogersii. 



