EUPHORBIA. 



205 



cies. The original one (E. officinarumf), discovered by 

 King Juba in Barbara, was so named by him in honor of 

 Euphorbus, his chief physician. 



FIG. LV. Euph6rbia maculata : 2, section of an involucre showing the $ flowers ; 

 3, a $ flower with its bract ; 4, an involucre entire, showing the 1 ? flower, etc. ; 5, 

 section of ovary ; 6, section of a seed of E. Ldthyris, with embryo, and (<X) caruncle. 



SPECIFIC CHARACTER, The species before us differs from 

 all others in the following: combination of characters : Root 



