862 COMPOSITAE (COMPOSITE FAMILY) 



89. SERfNIA Raf. 



Heads as in Lapsana, but the involucre not calyculate ; tips of the bracts 

 somewhat conniving in fruit. Achenes obovoid, 10-costate, obscurely and trans- 

 versely scabrous-lineolate. Low glaucescent glabrous annuals, with oblong to 

 lanceolate entire or repand-dentate leaves, the upper sessile; and small scat- 

 tered heads on slender peduncles. (Name intended as a diminutive of o-<fpis, 

 chicory.) APOGON Ell. 



1. S. oppositifblia (Raf.) Ktze. Peduncles naked or glandular-bristly below 

 the small (0.5cm. high) heads. Damp sandy soil, S. C. to 111,, Kan., and 

 southw. March-June. 



90. ARN6SERIS Gaertn. 



Heads many-flowered ; flowers all ligulate and fertile. Involucre campanulate ; 

 bracts narrow, equal, in 1 series, acuminate, after anthesis thickened toward the 

 base. Small annual, with rosulate leaves and branched upwardly thickened 

 scapes bearing rather small heads of yellow flowers. (Name from dpf6s, lamb, 

 and <7^>, chicory.) 



1. A. Mf>riMA (L.) Dumort. (LAMB SUCCORY.) Puberulent, 1.5-3 dm. 

 high; leaves oblanceolate or spatulate, mostly toothed. Fields, etc., Me., O., 

 Mich., and probably elsewhere. (Adv. from Eu.) 



91. CICH6RIUM [Tourn.] L. SUCCORY or CHICORY 



Heads several-flowered. Involucre double, herbaceous, the inner of 8-10, the 

 outer of 5 short and spreading bracts. Achenes striate ; pappus of numerous 

 small chaffy scales, forming a short crown. Branching perennials, with deep 

 roots ; the sessile heads 2 or 3 together, axillary and terminal, or solitary on 

 short thickened branches. Flowers bright blue, varying to purple or pink 

 (rarely white), showy. (Altered from the Arabian name of the plant.) 



1. C. INTYBUS L. (COMMON C., BLUE SAILORS.) Stem-leaves oblong 

 or lanceolate, partly clasping, the lowest runicate, those of the rigid flowering 

 branches minute. (Including var. divaricatum of Am. auth., probably not of 

 DC.) Roadsides and fields, Nfd. to Minn., and southw. ' July-Oct. (Nat. 

 from Eu.) 



92. KRiGLA Schreb. DWARF DANDELION 



Heads several-many-flowered. Involucral bracts several, in about 2 rows, 

 thin. Achenes short and truncate, top-shaped or columnar, terete or angled ; 

 pappus double, the outer of thin pointless chaffy scales, the inner of delicate 

 bristles. Small herbs, branched from the base ; the leaves chiefly radical, 

 lyrate or toothed ; the small heads terminating the naked scapes or branches. 

 Flowers yellow. (Named for David Krieg, a German physician, who was 

 among the first to collect plants in Maryland.) ADOPOGOX Neck. 



1. CYMBIA T. &G. Bracts of involucre 5-8, remaining erect ; achenes turbi- 

 nate ; pappus of 5 obovate scales, and usually 5 alternating bristles ; annual. 



1. K. occidentalis Nutt. Scapes tufted, 1.5 dm. or less hiirh, glandular- 

 hispid, at least above ; leaves obovate to lanceolate, entire, lyrately lobed, or 

 pinnatifid. (Adopogon Ktze.) Prairies, s. Mo. and Kan. to Tex. March-May. 



2. EUKRfGIA T. & G. Bracts of involucre 9-18, reflexed in age; achenes 

 turbinate, o-angled ; pappus of 5-7 short roundish scales and as many alter- 

 nating bristles ; annual. 



2. K. virginica (L.) Willd. Scapes several, 3 dm. or less high, becoming 

 branched and leafy ; earlier leaves roundish and entire, the others narrower and 

 often pinnatifid. (Adopogon carolinianum Britton.) Dry soil, s. Me. to Out., 

 Minn., and southw. Apr.-Aug. 



