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SILVA OF NORTH AMERICA. euphorbiace^ 



CONSPECTUS OF THE NORTH AMERICAN SPECIES. 



Calyx 5-lobecl ; stamens 8 ; ovary 1-celled ; fruit oblong ; exocarp thick and mealy ; nutlet thick- 

 walled 1. D. Keyensis. 



Calyx 4-lobed ; stamens 4 ; ovary 2-celled ; fruit subglobose ; exocarp thin, crustaceous ; nutlet thin- 

 walled 2. D. LATERIFLOEA 



