542 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 



Flowers yellow; leaves mostly lobed. 



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



entire 5. A. elata. 



Akenes with beak 8 to 10 mm. long; leaves mostly 



lobed ^. A. apargioides. 



Beak much longer than the body of the akene. 



Annuals; heads small 10. ^4. heterophylla. 



Perennials; heads large. 



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



Apex of akene attenuate. 



Heads 2 cm. high 8.-4. laciniata. 



Heads 2.5 to 3 cm. high 9.-4. (jraivdiflora. 



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

 Trorimon alpestre A. Gray, Proc. Am. Acad. 10: 70. 1883. 



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

 Ran«e: Cascade Mountains of Washington and Oregon. 



Specimens examined: Mount Rainier, Flfll 248, 273, 272; Piper 2140, 493; Alien 288; 

 Mount Adams, SuJcsdorf 422; near Mount Adams, Henderson, August 5, 1892. 

 Zonal oistkibution: Arctic. 



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

 Trorimon glaucum Nutt. Gen. 2: 128. 1818. 



Type loc^alitt: "On the banks of the Missouri." 



Range: Briti.sh Columbia and All)erta to Oregon, Colorado, and Dakota. 



Specimens examined: Cascade Mountains, latitude 49°, LyaJl in 1860; EUensburg, 

 Whited 507; Toppenish, Henderson, May 28, 1892; Piwluustin, Sarulbenj cfc Leiberg 490; 

 Spangle, Piper 2873; Spokane, C. A. Ramm in 188.3; Spokane County, Suksdorf 383; 

 Beaver Creek, Whited "ia^; Loomis, Elmer ^'^2; Pullman, Piper ^, 1769, 1862; Union Flat, 

 Hull, July 18, 1892; Waitsburg, Horner 345; Walla Walla Region, Brandegeem); witliout 

 locality, Vasey 557; Clarks Springs, Kreager 104. 



Zonal distribution: Arid Transition. 



2a. Agoseris glauca scorzoneraefolia (Schrad.). 



Ammogeton scorzoneraefolium Sciirad. Cat. Sem. Goett. 7. 1833. 



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



Agoseris scorzoneraefolia Greene, Pittonia 2: 177. 1891. 



Type locality: " America horealis arctica. " 



Range: Nearly identical with that of A. glauca. 



Specimens examined: Spokane County, Geyer 066; Fort Simcoe, Lyall in 1860; 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 (Rydbcrg). 



Agoseris leontodon asperum Rydberg, Mem. N. Y. Bot. Gard. 1: 457. 1900. 



Troximon glaucum asperum Piper, Mazama 2: 96. 1901. 



Type xocaltfy: Mount Chauvet, Idaho. 



Range: Washington to Montana. .- . 



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

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



Zonal distribution: Arctic. 



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

 Troximon aurantiacum Hook. Fl. Bor. Am. 1: 300. pi. JO4. 1833. 

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



