NATURAL ORDER OF ORCHIDE7E. I** 



D. cernua. D. chrysostachya Sw. 



Satyrium ce'r- 



nuum #. y. Th. bract eat a Sw. 



physodes. 

 Satyrium cer- 

 nuum a?. Th. 



D. cernua : galea acuta, calcare oblongo com- 



presso nutante ; foliolis inter, acuminatig ; 



labello lineari ; foliis lanceolatis basi sube- 



quitantibus. 

 D. physodes : galea obtusa, calcare subrotundo 



inflato ; foliolis inter, retusis emarginatis ; 



labello lineari ; foliis lineari-lanceolatis. 

 1 

 D. chrysostachya : galea obtusa, calcare oblongo 



deflexo ; foliolis inter, obovatis ; labello 



lineari ; spica longissima ; bracteis apice 



reflexis. e C. b. sp. Spar rm an. 



I). bracteaia : galea obtusa, calcare oblongo ; 

 labello lineari apice latiore ; spica cylin- 

 drica, bracteis erectis floribus longioribus. 

 e C. b. sp. Sparrman. 



