A CENTURY OF BOTANICAL EXPLORATION IN MONTANA. 23 



Pursh, Frederick. "Flora Americae Septentrionalis." London, 

 1814. Describes the plants collected by the Lewis and Clark Expe- 

 dition, some 33 species being from Montana and a ; ,o;u't two-thirds 

 of these l^ung new. Noteworthy as being the first species des- 

 cribed from the present state of Montana. See also Thos. Meehan. 



Rose, J. N. "Notes on some western plants." Bot. Gaz. 15: 

 (3-66. 1890. Devoted largely to the Montana species of Tweedy, 

 several new species being described. 



Rydberg, P. A. "Rarities from Montana." Bull. Torr. Bot, 

 Club, 24: 188-192; 243-253; 292-299. 1897. Contains many new 

 species. 







Rydberg, P. A. "Caespitose willows of Arctic America and the 

 Rocky Mountains". Bull. N. Y. Bot. Card. 1 : 257-278. 1899. 

 Discusses a number from Montana. 



Rydberg,P. A. "Phytogeography of Montana" (abstract). Bull, 

 Torr. Bot. Club, 27: 292-294. 1900. A brief synopsis of the x subject, 



Rydberg, P. A. "Catalogue of the flora of Montana and the Yel- 

 lowstone National Park." Mem. N. Y. Bot. Card, i : 1-492. 1900. 

 Contains an annotated list of all the species known to the state with 

 descriptions of the species not found in Coulter's "Manual." A 

 large number of new species described. 



Rydberg, P. A. "Studies on the Rocky Mountain flora." Bull, 

 Torr. Bot. Club, 27: 169-189; 528-538 ; "614-636 (1900); 28; 20-38; 

 266-284; 499~5 I 3 ( I 9 l ) 5 2 9 : 145-160; 232-246; 680-693 (1902); 

 30: 247-262 (1903); 31: 299-410; 631-655 (1904). Mentions many 

 new species from Montana. 



Rydberg, P. A. and C. L. Shear. "A report upon the grasses and 

 forage plants of the Rocky Mountain region." Bull. U. S Dept, 

 Agr., Div. Bot. 5: 1-48. Washington, 1897. Contains many notes 

 on the grasses of Montana. 



Sargent, C. S. "Report on the forests of North America." loth 

 Census, 9: 564-566. Washington, 1864. Includes an important 

 paper on the forestry of the state, written mainly by Watson. 



Scribner, F. Lamson. "Notes on the Grasses of Montana" in 



