SUMMARY 



Number of genera and species described in this book, 



ivith the number given in older floras of the Rocky 

 xegion.* 



Rydberg Coult. & Nels. 



1917 1909 



Pinaceae 9 19 4 12 



Juniperaceae 3 8 1 6 



Taxaceae 1 1 



Ephedraceae 1 15 1 3 



Gymnospermae 14 33 6 21 



r 



Typhaceae 1 2 1 2. 



Sparganiaceae 1 5 1 6 



ZanichcUiaceae 3 24 4 16 



Naiadaceae 1 3 1 2 



Scheuchzeriaceae 2 3 1 2 



Alismaceae 2 7 2 5 



Elodiaccae 1 2 1 1 



Poaceae 78 451 65 206 



Cypcraceae 13 215 7 99 



Araceae 2 2 



Lemnaceae 2 6 2 7 



Commclinaceae 2 6 2 3 



Pontederiaceae 2 2 1 1 



Melanthaceae 6 21 4 6 



Juncaceae 2 47 2 25 



Alliaceae 5 40 2 10 



Liliaceae : 8 16 6 8 



Convallariaceae 7 17 4 7 



Dracaenaceae 3 7 1 3 



Calochortaceae 1 10 1 2 



Trilliaceae 12 9 ? 



Smilacaceae 1 1 *■ 1 



Amaryllidaceae 2 2 



Iridaceae 3 13 2 5 



Orchidaceae 18 45 Jl ^9 



Monocotylcdonea 168 749 132 435 



Salicaceae 2 90 * 2 40 



Fagaceae 1 1 ' J ^ 



Betulaceae 2 19 2 5 



Corylaccae ? a 11 



Ulmaceae 2 6 J ^ 



Cannabinaceae. 2 3 1 1 



Urticacoae , . . . . 2 12 2 4 



compared 

 Mountain 



Coulter 

 1885 



4 

 1 

 

 1 



6 



10 

 4 

 

 2 



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 



20 



1 



2 



2 



4 



1 



1 



2 



2 



1 



1 



3 



6 



ive the number of genera and spec- 



give tne numuer ui geiiura ttuu Npou- 



Nels." give those in the New Manual 



* The columns under the heading "Rydber; 



!>T ^iTnTi^'Jh^J^tSi Ky"S"un;»y Coxdter- and Nelson 1909 and those 

 undur "Coulfcor," in Manual of Botany of the Rocky Mountain Region, by John M 

 Coulter 1885. The gcoKraphlcal 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 



