COMTOSTTJE. (COKPOSTTU FAMILY.) 210 



Subordku III. LIGI'LIFLORJS. 



Tribe VII. CICIIORAOE.E. Style cylindrical above and pubescent, likt the 

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



the branches. — Plants with milky juice. : leaves alternate. 



81. APOGON, Ell. 



Heads 1 - 20-flowcrcd. Scales of the involucre mostly 8, somewhat in two 

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

 Aehenia 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, Schreb. 



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 chaffy scales ; the inner of 5 rough bristles. — Small annual 

 herbs, branching at the base, with naked peduncle-like steins, 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 



