Ill reference to the distribution of 'gencrii and species in North 

 America, the fact of tlicir uniform (Hstrihiition is brought out by 

 tne following data: in \. K. United Stales (the- range covered liy 

 Gray's Manual^ ) there are 'jT Ljenera ai.d 14 sjoecies; in vS. E. 

 United States (range of Chapmairs Manual) there are 27 genera 

 and 41> species; in tlic RocUv Mountain region witiiin the United 

 States (range of Coulter's Manual) there aie 21 genera and 4;} 

 species; in California (Botan\- of California) there are 2f) genera, 

 ()5 species; in British North America (Macoun's Catalogue) there 

 are 28 genera and 7)7) species: in the (iieat Basin (Watson in Bot, 

 King's Report) there are 17 genera and 88 species. 



Contrasting the Umbellifera' of eastern and western North 

 America, the latter not only gives the greater disj^lay, but also 

 presents the characteristic forms of the continent, differing far 

 more from the Umbellifera' of e\erv other continent than do those 

 of E. North America. T\vent3'-one genera and about 150 species arc 

 restricted to W. North America; while but 7 genera and about 40 

 species are restricted to E. North America; which shows 28 gen- 

 era and about 20 species distributed both east and west. 



Only {) sjoecies can be considered really alpine, viz: ]''cuced- 

 ani/m Sandbergii^ P. Oreganutn^ /'. Ciisickii, Cymopterus nivalis^ 

 C. ternatus^ C. chietarius^ Oreoxis Inimilis^ Podistcra Nevadensis^ 

 and Yelcva Hoivel(ii\ although many sjjecies extend well up the 

 mountain sides. 



The largest genus is Pcuccdaintiii^ with 48 species, being 

 more than one-fifth of our Umbellifeis. The next genus in point 

 of numbers is Eryfig'nna with 29 species; then Angciica with 10 

 species; Cymopterus v.ith 18 species; Saiiicula with 10 species; and 

 il/_i^7/.v/'/a/w with y species. It will be seen that these six genera 

 contain more than half of our nali\e species. 



Our monotypic genera are ^\/ctcs, Cnvifzia^ Crvplohcuia^ 

 Hrigcnia^ Hurytomia^ Harbouria^ Museniopsis^ Orcoxt's, Phcllop- 

 tcrus^ Podistcra^ Polyttviiia^ and 'J^rcpocarpus ; while the following 

 genera, in addition, are represented within our borders by but a 

 single native species, viz: Apiuin^ Bcnila^ lUfora^ J->o\vIesia^ Bu- 

 plcurum^ Caiicalis^ CJio'rophyUiim^ CoNioselii/uiii^ J)iiiicus^ Ile- 



1 In usinj; tlie nuiiitiers obl;iincci from the various inanunU anil catalog-ues it must l>c 

 rcnieniliercd that no account is made of the sliijht chaiuri-s whit h ha\c been ni-ccssarv, but 

 whicli do not aflfit the jjcni-ral conclusion. 



