SUMMARY 



Number of genera and species described in this book, compared 

 with the number given in older floras of the Rocky Mountain 

 region.* 



Rydberg 

 1917 



Pinaceae 9 19 



Juniperaceae 3 8 



Taxaceae 1 1 



Ephedraceae 1 15 



Gymnospermae 14 33 



Typhaceae 1 2 



Sparganiaceae 1 5 



Zanichelliaceae 3 24 



Naiadaceae 1 3 



Scheuchzeriaceae 2 3 



Alismaceae 2 7 



Elodiaceae 1 2 



Poaceae 78 451 



Cyperaceae 13 215 



Araceae 2 2 



Lemnaceae 2 6 



Commelinaceae 2 6 



Pontederiaceae 2 2 



Melanthaceae 6 21 



Juncaceae 2 47 



Alliaceae 5 40 



Liliaceae 16 



Convallariaceae 7 17 



Dracaenaceae 3 7 



Calochortaceae 1 10 



Trilliaceae 1 2 



Smilacaceae 1 1 



Amaryllidaceae 2 2 



Iridaceae 3 13 



Orchidaceae 18 45 



Monocotyledones 168 749 



Salicaceae 2 90 



Fagaceae 1 17 



Betulaceae 2 19 



Corylaceae 2 3 



U Imaceae 2 6 



Cannabinaceae 2 3 



Urticaceae. , 2 12 



Coult. & Nels. 

 1909 



4 12 



1 6 







1 3 



6 21 



1 2 



1 5 



4 16 



1 2 



1 2 



2 5 



1 1 

 65 206 



7 99 







2 7 

 2 3 



1 1 

 4 6 



2 25 

 2 10 

 6 8 

 4 7 

 1 3 

 1 2 







1 1 

 



2 5 

 11 19 



132 435 



2 

 1 

 2 

 1 



2 

 1 

 2 



40 

 7 

 5 

 1 

 2 

 1 

 4 



Coulter 

 1885 



4 10 

 1 4 







1 2 



6 16 



1 1 



1 3 



2 12 



2 3 



2 2 



48 139 



8 111 



2 3 



2 2 



5 8 

 2 20 

 4 16 



6 7 

 4 6 

 1 2 

 1 2 







1 1 



1 1 



2 3 



9 15 



104 357 



2 

 1 

 2 

 1 

 2 

 1 

 3 



20 

 2 

 4 

 1 

 2 

 1 

 6 



* The columns under the heading "Rydberg" give the number of genera and spec- 

 ies admitted in this book; those under "Cpult. & Nels." give those in the New Manual 

 of Botany of the Central Rocky Mountains, by Coulter and Nelson, 1909; and those 

 under "Coulter," in Manual of Botany of the Rocky Mountain Region, by John M. 

 Coulter, 1885. The geographical area covered by the present book is, however, about 

 half larger than that of the old Coulter's Manual, and nearly twice as large as that of 

 Coulter & Nelson's. 



1057 



