CHICORY FAMILY 1029 



petioled : blades oblanceolate or oblong, thin, long-hirsute, especially on the veins 

 and petioles; stem-leaves sessile, lanceolate, less hairy; heads numerous, cor}-m- 

 bose-paniculate : involucres campanulate, 8-10 mm. high; bracts proper narrowly 

 lance-linear, glabrous or minutely puberulent; pappus sordid. Woods: Sa.sk. — 

 Colo. — Calif. — Yukon. S'lhmnnf. — Mont. Je-Au. 



23. AGOSERIS Raf. Goat Chicory. 



Perennial herbs, with strong taproots, or annuals, mostly acaulescent. In- 

 volucre campanulate to nearly cylindric; bracts imbricate in a few series, the 

 outer broader and shorter. Flowers j'ellow, orange, or purplish. Achenes fusi- 

 form or oblong, 10-ribbed, narrowed above into a beak. Pappus of numerous 

 capillar^' white bristles. 



Perennials. 



Beak short, scarcely more than half as long as the body of the achene, striate through- 

 out. I. Glaucae. 

 Beak long, about as long as or longer than the body of the achene, scarcely striate at 

 the middle. 

 Body of the achenes tapering at the apex. II. AuR.wn.\c.VE. 

 Body of the achenes truncate at the apex. III. Retrors.\j;. 

 Annuals. IV. Heterophtll.ve. 



I. Gl.\ucae. ( 



Leaves decidedly pubescent, even in age. 



Outer bracts hnear-lanceolate to oblong, obtuse or acute. 

 Outer bracts linear-lanceolat«. 



Plant tall and stout, .3-5 dm. high; involucres broadly campanulate. about 



2.5 cm. high and 2.. T-.3 cm. wide. 1. A. laraincifoUa. 



Plant low, 1-2 dm. high; involucres less than 2 cm. high and 1-2 cm. wide. 

 Leaves Unear-oblanceolate, 6—10 cm. long; peduncle slender, about 2 dm. 



high. 2. A. pubescens. 



Leaves oblanceolate, 4—6 cm. long, often lobed or toothed ; peduncles 1 dm. 

 high or less. 3. A. aspera. 



Outer bracts oblong or oblong-ovate. 



Scape low and stout, about 2 dm. high; leaves oblanceolate, about 1 dm. long. 



4. A. Hllosa. 

 Scape taU, about 6 dm. high; leaves 2-3 dm. long; flowers turning piu-ple. 



5. .4. altissima. 

 Outer bracts ovate or ovat«-lanceolate, acuminate. 6. A. maculata. 



Leaves in age glabrate and glaucous. 



Bracts ^-illous-citiate, at least on the margins. 



Involucre turbinate; leaves narrowly linear; flowers Ught yeUow, turning pink. 



7. .4. turbinata. 

 Involucres campanulate to hemispherical: leaves oblanceolate or lanceolate. 



Inner bracts long-acuminate; plant less than 2 dm. high. 



8. .4. attenuata. 

 Inner bracts merely acute. 



Leaves obtuse or acute, entire or rarely toothed. 



Out-er bracts much broader than the inn er, often obtusish: plant gener- 

 ally low and leaves short, obtuse. 9. A. pumila. 

 Out-er bracts asuaUy not much broader than the inner; plant 3-5 dm. 

 high; leaves long and acute. 10. A. scorzonerae folia. 

 Leaves acuminate, more or less ptnnatifid. 11. A. agrestis 

 Bracts glabrous; involucres if at aU hairy, tomentose only at the very base. 



Outer bracts oval or ovate, obtusish; leaves 2-3 dm. long, oblanceolate; flowers 



rose-colored. 12. A. roseata. 



Bracts all Unear-lanceolate, acute or acuminate; flowers yellow. 

 Leaves entire or toothed; flowers yellow, turning pink. 



Leaves Unear-oblanceolate. 13. A. glauca. 



Leaves narrowly linear. 14. A. parri flora. 



Leaves pinnatifld, with narrow lobes; flowers yellow, ttirning purple. 

 Bracts, with loose spreading tips; heads broadly campanulate. 



15. -4. rosea. 

 Bracts appressed; heads more or less turbinate. 16. ,4. laciniata. 



II. ArR.\XTi.\c.^j:. 

 Bracts all broad, ovate to elliptical, abruptly acuminate. 17. A. montana. 



Bracts, at least the inner ones, Unear or linear-lanceolate, acute. 



Involucres more or less regularly imbricate; beak about equaUing the body of the 

 achenes. 

 Leaves densely pubescent. 



Plant low; flowers purple. 18. A. arachnoidea. 



Plant tall; flowers yellow. 19. .4. elata. 



Leave? glabrous or nearly so, somewhat hairy in Xo. 27. 



Flowers reddish brown or deep orange, changing into purplish. 



Bracts with purpUsh blotches; leaves glaucous. 20. .4. purpurea. 



