the corolla), of four, nearly equal, almost cordate, broad, spread- 
ing sepals, slightly downy externally. Corolla full yellow ; upper 
lip very small and paler yellow, partly closing the aperture of 
the inferior lip, which is large, subglobose, and slightly downy. 
Stamens two, and, as well as the short style, quite enclosed by 
the corolla. 
Fig. 1. Calyx. 2. Corolla :—slightly magnified. 
