1320 CICHOKIACEAE 



spreading, 1-2 dm. long : leaf-blades various, spatulate to linear, sometimes broadly so, 

 sinuate-pinnatifid or the upper ones entire : involucres 6 mm. high at maturity ; bracts 

 oblong to lanceolate : ligules orange : achenes about 1 mm. long, prominently ribbed and 

 minutely transversely wrinkled : pappus wanting, or a mere vestige. 



On rocky prairies, Texas. Spring. 



3. Serinea Wrightii (A. Gray) Kuntze. Foliage glabrous, or slightly glandular- 

 pubescent along the peduncles under the heads. Stems more or less diffusely branched at 

 the base ; branches erect or spreading, often less than 1 dm. long : leaves few ; blades 

 spatulate to linear-spatulate, 2-6 cm. long, usually acute, entire or undulate : peduncles 

 slender, sometimes longer than the rest of the branches: involucres 5-6 mm. high at ma- 

 turity ; bracts broadly oblong to ovate : achenes about 1.5 mm. long, usually with an ob- 

 scure vestige of pappus. [Apogon Wrightii A. Gray. ] 



In river valleys, eastern Texas. Spring. 



12. CICHORIUM L. 



Perennial herbs, with rigid branching stems. Leaves sometimes mainly basal : blades 

 toothed or pinnatifid, often crisped. Heads showy, white, pink, blue or purple, peduncled 

 or sessile and often clustered. Involucres herbaceous : bracts in 2 series, the outer more or 

 less spreading, the inner erect. Receptacle flat, naked or sparingly fimbrillate. Ligules nar- 

 row, toothed and truncate at the apex. Anthers sagittate at the base. Stigmas slender, 

 rather obtuse. Achenes short, 5-ribbed or 5-angled, beakless, more or less completely 

 enclosed by the inner bracts of the involucre. Pappus of 2 or 3 rows of short scales. 



1. Cichorium Intybua L. Tap-root tough, elongated. Foliage hirsute or hispidu- 

 lous at least below: stems erect, 3-15 dm. tall, rigidly branched : leaf-blades various ; basal 

 spreading, usually runcinate, 1-2 dm. long ; those of the stem oblong to lanceolate, entire, 

 coarsely toothed or pinnatifid : involucres about 1 cm. long ; bracts lanceolate to linear- 

 lanceolate, glandular-ciliate above : heads sky-blue or white, 2.5-4 cm. broad, closing by 

 noon : achenes slightly enlarged upward, 2-2.5 mm. long, minutely wrinkled. 



In waste places, fields or on roadsides, Nova Scotia to Minnesota, Nebraska and Florida. Summer 

 and fall. CHICORY. WILD SUCCORY. 



