PTPER FLORA 01^ THE STATE OF WASHINGTON. 571 



Leaves serrate, not firm ; l)racts not rigid, loose 5. A. major. 



Involucre not viscid or glandular. 

 Heads less than 1 cm. broad. 



Rays purple ; involucre turbinate 6. A. amethystinus. 



Rays usually white; involucre cam panulatc. 



Herbage harshly puberulent 7 . A. mvltifornfi. 



Herbage not harshly puberulent. 



Involucral bracts acute 8. A. oreganus. 



Involucral bracts obtuse 9. A. hallii. 



Heads more than 1 cm. broad. 



Involucral bracts closely appressed, mainly coriaceous. ' 



Akenes glabrous. 



Leaves glaucous, entire 10. A. laexria. 



Leaves green, .serrate, glabrous IL A. elmeri. 



Akenes pubescent; leaves puberulent, entire 12. A. jessicae. 



Involucral bracts looser, largely herbaceous. 



Leaves few, large, scarcely reduced upward, the 

 cauline with auriculate or clasping bases. 



Heads solitary or few, long-peduncled ; leaves 



dark green, usually glabrous 13. A. foliaanft. 



Heads several; stems leafy to the top; leaves 



thin, pale, usually pubescent 14. A. cusickii. 



Leaves numerous, either small, or much reduced 

 upward; cauline sessile, not at all auriculate. 

 Pubescent throughout; involucral bracts 



herbaceous, lanceolate, flat 15. A. imttii. 



Glabrous or nearly so; involucral bracts nar- 

 row, acute. 



Involucral bracts, at least the outer ones, 

 foliaceous and pa.ssing into the leaves. 



Leaves firm, entire, numerous 16. A. entoni. 



Leaves thinner, less numerous, usually 



serrate near the middle 17. A. douglasii. 



Involucral bracts not at all foliaceous 

 Heads corj'mbose. 



Leaves serrulate, those of the 



inflorescence much reduced.. 18. A. ocndentaliK. 

 Leaves entire, those of the inflo- 

 rescence not much reduced. . . 19. A.fremontii. 

 Heads solitary, naked-pedunculate.. . 20. A. Menomeres. 



1. Aster conspicuus Lindl. Hook. Fl. Bor. Am. 2: 7. 1834. 

 Afiter macdougalii Coult. & Fisher, Bot. Gaz. 18: 301. 1893. 

 Type locality: "Carlton House." Collected by Drummond. 



Range: British Columbia to Saskatchewan south to Oregon and Montana. 



Specimens examined. Peshastin, Sandherg & Leibf-rg 494,; foothills near Wenache, Whited 

 0, 1290, 1294; Ophir, Elmer 529; Lake Chelan, Lake c& Hull 692, Alma, Elmer 538; Fort 

 Colville, LyaZ/ in 1860; Geyer; Spokane County , Svksdorf 927; Kamiak Butte, Piper; near 

 Colton, Piper, July, 1898; Blue Mountains, Piper, July and August, 1896. 



Zonal distribution: Arid Transition. 



2. Aster radulinus A. Gray, Proc. Am. Acad. 8: 388. 1872. 

 Aster radula Less. Linnaea 6: 125 1831, not Ait. 1789. 

 Type locality: "In California." Collected by Charaisso. 



Range: Washington to California. . , 



