290 Sciemtific Intelligenee. 



properly Mexican ; 1 or 2 species extending farther south, and 6 reaching 

 into our flora. The best known representative of this section, E. hetcrophylla, 

 has been restored, recognizing E. cyathophora and E graminifolia as varieties 

 of the Linnean species. The New Mexican E. cuphospemia, which 1 had de- 

 scribed as a form of edenlata, is here described as a distinct species. E. erian- 



remarked that the name of Arizona does not occur in this or other botanical 

 publications, as a district formerly of the Mexican State of Sonora; just as 



botanical works for the Upper Missouri country. 



Sections 16-95, with 115 species, almost all belong to the Old World; they 

 include the Euphorbiae with succulent stems, those with the forms of Cacti. 



Section 26, T^lth'/milus, comprises the great mass of the Euphorbite of the 



which belong to. the southwest ; 5 others have been sparingly introduced from 



ig to the New World: 4 of them are peculiar 

 er from the West Indies to the southern extrem- 

 ; appears, to the Chilian forms, is pecuhar to 



Texas and California'. S ^ V 



The largest sub-section, Esw/ce, (with two-horned glands), comprising 13 

 species, counts in our flora 12 species, 2 of them in the middle and souther 

 States, and all the rest belonging to Texas, New Mexico and California. 



The 27th section is constituted by a single species, an Australian shrub. 



We find the name of two of our published species E commutcdn Englm. m 

 Gray's Manual, and E. Floridarm, Chapm. in his Southern Flora, replaced by 

 E. Ohotica, Steud. & Hochst. and E. spJuErmperrm, Shuttlew., names which 

 have been published only on labels in distributed collecti "•• .-^- 



Shuttlew., has not been substituted for E. Cm 



names, given without knowing of the distr 



The following table exhibits the geographical distribution of the 80 specie- 

 of Euphorbia, credited by M. Boissierto the Flora of the United States, ihe 

 imrnense extent of this Flora may be properly divided into five districts. 



I. Flora of the Northern and Middle States, or the Flora of Gray's Manual' 



ni Flora of the Western Prairie Region from the 



IV. Flora of the Rocky Mountains, includintr the ' 



^V^rl,^'^-''"' ^^^ "^'.'^'^ «f Utah, Colorado, New 



nfr.? ■'.^u '^® «xt'-^">e limits of our Flora from the southern countries aoj» 

 extension Ltrth^^' *^^'''**'*""^' "^^"^ ^^ ^^^'^^^^ according to their geographical 



S'S ■^'^"' '*?^"*' ^^"Py^ifoi^ ZuyJat^rcoroUat'aJ'devtata, heieropg^ 

 and fhdyosptrma, though some of them are comlnon only to the eastern, others 



