542 CONTRIBUTIONS FBOM THE NATIONAL HEEBARIUM. 



Flowers yt'llow: loaves mostly lobed. 



Akeiies with beak 12 to 15 mm. long; leaves mostly 



entire 5. A. elata. 



Akenes with beak 8 to 10 mm. long; leaves mo.stly 



lobed (3. -i. aparrj'undes. 



Beak much longer than the body of the akcne. 



Annuals ; heads small 10. ^4. heteroplnjlla. 



Perennials; heads large. 



Apex of akene truncate; herbage tomentose 7. A. rdrorsa. 



Apex of akene attenuate. 



Heads 2 cm. high. 8. ^1. laciniata. 



Heads 2.5 to 3 cm. high 'J. .1. (jrandifora. 



1. Agoseris alpestris (A. Gray) Greene, Pittonia 2: 177. 1891. 

 Troximon alpedre A. Gray, Proc. Am. Acad. 19: 70. 1883. 



Type locality: Mount Adams, Washington. Collected by Suksdorf. 

 Range: Cascade Mountains of Washington and Oregon. 



Specimens examined: Mount Rainier, Flett 248, 273, 272; Piper 2140, 493; Allen 288; 

 Mount Adams, Sulcsdoif ■i'Z'I; near Mount Adams, Henderson, August 5, 1892. 

 Zonal distribution: Arctic. 



2. Agoseris glauca (Nutt.) Greene, Pittonia 2: 177. 1891. 

 Troximon (jlaucum Nutt. Gen. 2: 128. 1818. 



Ty'pe LOCALITY': "On the banks of the Missouri." 



Range; British Columbia and Alberta to Oregon, Colorado, and Dakota. 



Specimens examined; Cascade Mountains, latitude 49°, Lyall in 1860; Ellensl)urg, 

 Whited 507; Toppenish, Henderson, May 28, 1892; Peshastin, Sandberg & Leiberg 490; 

 Spangle, Piper 2873; Spokane, C. A. Rarrtm in 1883; Spokane County, Suksdorf 383; 

 Beaver Creek, Whited 233; Loomis, Elmer 552; Pullman, Piper 3, 1769, 1862; Union Flat, 

 Hull, July 18, 1892; Waitsburg, Horner 345; Walla Walla Region, Brandegee 930; without 

 locality, Vasey 557 ; Clarks Springs, Kreager 104. 



Zonal distribution: Arid Transition. 



2a. Agoseris glauca scorzoneraefolia (Schrad.). 



Ammogeton scorzoneraejolium Schrad. Cat. Sem. Goett. 7. 1833. 



Troximon glaucum dasycephcdum Torr. &. Gr. Fl. 2: 490. 1843. 



Agoseris scorzoneraefolia Greene, Pittonia 2: 177. 1891. 



Type locality: "America borealis arctica." 



Range: Nearly identical with that of A. glauca. 



Specimens examined: Spokane County, Geyer 666; Fort Simcoe, Lyall in 1S60; Pull- 

 man, Piper 3027, 3029, 3536. 



This plant differs from A. glauca only in having a pubescent involucre. It is scarcely 

 worth nomenclatorial recognition. 



2b. Agoseris glauca aspera (Rydberg). 



Agoseris leoidodon asperuin Rydberg, Mem. N. Y. Bot. Gard. 1: 457. 1900. 



Troximon glaucum aspei-um Piper, Mazama 2: 96. 190l. 



Type locality'; Mount Chauvet, Idaho. 



Range: Washington to Mentana. 



Specimens examined: Mount Rainier, Piper 2149; AUen 226; Wenache Mountains, 

 Elmer 455; North Fork Bridge Creek, Elmer September, 1897. 



Zonal distribution: ^\Tctic. 



3. Agoseris aurantiaca (Hook.) Greene, Pittonia 2: 177. 1891. 

 Troximon aui-antiacuni Ilook. Fl. Bor. ^Im. 1: 300. pi. lOJf.. 1833. 

 Type locality: "Alpine prairies of the Rocky Mountains." 



