256 CALIFORNIA ACADEMY OF SCIENCES [Proc. 4th Ser. 



EXPLANATION OF PLATE III 



Drawn by F. S. Mathews 



Euphorbia equisetiformis Stewart n. sp. X -5. 



Euphorbia equisetiformis Stewart^ flower. X 2. 



Euphorbia Stevensii Stewart n. sp. X 1- 



Euphorbia Stevensii Stewart, flower. X 4. 



Euphorbia articulata Anderss. variety bindloensis Stewart n. var. 



X 1. 

 Brachistus pubescens Stewart n. sp. X 1- 

 Brachistus pubescens Stewart, dissected flower. X 2. 

 Brachistus pubescens Stewart, fruit. X 2. 

 Cissampelos galapagensis Stewart n. sp. X -5. 

 Cissampelos galapagensis Stewart, flower. X 4. 



