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, corym- 

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

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

 Colo. Calif. Yukon. Submont. 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 yellow, orange, or purplish. Achenes fusi- 

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

 capillary 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. ATJRANTIACAE, 



Body of the achenes truncate at the apex. III. RETRORSAE. 



Annuals. IV. HETEROPHYLLAE. 



I. GLAUCAE. 



Leaves decidedly pubescent, even in age. 



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

 Outer bracts linear-lanceolate. 



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



2.5 cm. high and 2.53 cm. wide. 1. A. taraxacifolia. 



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

 Leaves linear-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. villosa. 

 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 villous-ciliate, at least on the margins. 



Involucre turbinate; leaves narrowly linear; flowers light 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. atlenuata. 

 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. scorzoneraefolia. 

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

 Bracts glabrous; involucres if at all 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 linear-lanceolate, acute or acuminate; flowers yellow. 

 Leaves entire or toothed ; flowers yellow, turning pink. 



Leaves linear-oblanceolate. 13. A. glauca. 



Leaves narrowly linear. 14. A. par ri flora. 



Leaves pinnatifid, 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. AURANTIACAE. 



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



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



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



achenes. 

 Leaves densely pubescent. 



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



Plant tall; flowers yellow. 19. A. data. 



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



Flowers reddish brown or deep orange, changing into purplish. 



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



