COMPOSITE. (COMPOSITE FAMILY.) 219 



SUBORDKU III. LIOULIFLOR.X. 



TRIBE VII. CICHORACE^E. Style cylindrical above and pubescent, like the 

 rather obtuse branches; the stiymatic lines terminating below or near the middle of 

 the branches. Plants with milky juice : leaves alternate. 



81. APOGON, Ell. 



Heads 10-20-flowered. Scales of the involucre mostly 8, somewhat in two 

 rows, nearly as long as the corolla, connivent in fruit. Receptacle naked. 

 Achenia ovoid-oblong, terete, ribbed and transversely striate, smooth. Pappus 

 none. A low smooth and branching annual, with lanceolate entire or toothed 

 leaves, and single or umbellate heads of yellow flowers, borne on slender pe- 

 duncles. 



1. A. humilis, Ell. Florida to South Carolina. April and May. 

 Stem-leaves clasping; the uppermost mostly opposite. Plant 6'- 12' high. 



82. KRIGIA, Schrcb. 



Heads 15-30-flowered. Scales of the involucre 6-15, somewhat in 2 rows, 

 equal. Receptacle naked. Achenia top-shaped, 5-angled. Pappus double ; 

 the outer of 5 broad chatty scales ; the inner of 5 rough bristles. Small annual 

 herbs, branching at the base, with naked peduncle-like stems, each terminated by 

 a small head of yellow flowers. Leaves chiefly radical, mostly lyrate or toothed. 



1. K. Virginica, Willd. Proper stem short, simple or forking; scapes 

 at length several, slightly pubescent, elongated in fruit ; leaves somewhat glau- 

 cous ; the lowest rounded, entire ; the others spatulate-oblong, pinnatifid. (K. 

 dichotoma, Nutt.) Dry sandy soil, Florida, and northward. March May. 

 Scapes at length 1 high. 



2. K. Caroliniana, Nutt. Stem short ; scapes pubescent or somewhat 

 hispid near the apex ; leaves linear-lanceolate, acute at each end, entire or spar- 

 ingly toothed, or the upper ones variously lobed. (K. leptophylla, DC.) Dry 

 sandy places, Florida to North Carolina. Feb. and March. Scapes 3' -12' 

 high. 



83. CYNTHIA, Don. 



Heads many-flowered. Scales of the involucre 12-15. Achenia short, ob- 

 long or top-shaped, obscurely 4-angled, not beaked. Pappus double ; the outer of 

 numerous, very small chaffy scales ; the inner of numerous bristles. Perennial 

 nearly smooth herbs, bearing single heads of yellow flowers on long more or 

 less glandular peduncles or scapes. Leaves alternate, entire or pinnatifid. 



1. C. Virginica, Don. Root fibrous; stem branched above, bearing 3- 

 5 heads on slender umbellate peduncles ; radical leaves oval or spatulate-oblong, 

 toothed or pinnatifid ; the upper ones clasping and entire ; achenia oblong. 

 Sandy soil in the upper districts. May - July. Stem 1 - 2 high. 



2. C. Dandelion, DC. Stemless or nearly so ; roots bearing small tu- 

 bers ; scapes several, bearing single heads ; lowest leaves spatulate-oblong ; the 



