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, corjTn- 

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

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

 Colo. — Calif. — Yukon. Sicbmont. — Mont. Je-Au. 



23. AGOSERIS Raf. Goat Chicory. 



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

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

 outer broader and shorter. Flowers yellow, orange, or purplish. Achenes fusi- 

 forrn or oblong, 10-ribbed, narrowed above into a beak. Pappus of niunerous 

 capillary white bristles. 



Perennials. 



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

 ^ out- I. GL.\rc.VE. 



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

 the middle. 

 Body of the achenes tapering at the apex. II. Aura^ntlvcae. 



Body of the achenes truncate at the apex. III. Retrors\e 



Annuals. IV. Heterophtll.\e. 



I. Gl.\ucae. 

 Leaves decidedly pubescent, even in age. 



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

 Outer bracts hnear-lanceolate. 



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



2-5 cm. high and 2.-5-3 cm. wide. " 1. A. taraxnci folia. 



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

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

 ., bigli. 2. .4. 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. rillosa. 

 Scape tall, about 6 dm. high; leaves 2-3 dm. long; flowers turning purple. 

 ^ , 5. A. altissima. 



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



Leaves in age glabrate and glaucous. 



Bracts -^-lUous-cihate, at least on the margins. 



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



7. A. turbinata. 

 Involucres campanulate to hemispherical: leaves oblanceolate or lanceolate. 

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

 ., , 8. A. attenuata. 



Inner bracts merely acute. 



Leaves obtuse or acute, entire or rarely toothed. 

 . Outer bracts much broader than the inner, often obtusish: plant gener- 

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

 Outer bracts usually not much broader than the inner; plant 3-5 dm. 

 high; leaves long and acute. 10. A. scorzoneraefoUa. 

 Leaves acuminate, more or less pinnatifld. 11. A. agresiis 

 Bracts glabrous; involucres if at all hairy, tomentose onlv at the very "base. 



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



rose-colored. 12. A. roseata. 



Bracts all hnear-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. parviflora. 



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

 Bracts, with loose spreading tips ; heads broadly campanulate. 



15. A. rosea. 

 Bracts appressed; heads more or less turbinate. 16. A. laciniata. 



II. ATrR.\.XTIAC-tE. 



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



Bracts, at least the inner ones, linear or hnear-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 taU; flowers yellow. 19. A. elata. 



Leaves glabrous or nearly so, somewhat hairy in No. 27. 



Flowers reddish brown or deep orange, changing into purplish. 



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



