little to the correct knowledge of either generic or specific dif- 

 ferences, but who are, nevertheless, instrumental in importing 

 plants which can hardly be described except from living culti- 

 vated specimens. 



Rg. 1. Flower. 2. Petals and scales, with a stamen. 3. Stamen. 4. Pistil : — 

 magnified. 



