270 COMPOSITE, (composite family.) 



SrHoKDKK II. LAinATIFLOK.K. 



Tribe VI. MUTISIACI'L^l JIkhIs with the Jlvwvrs dissimilar or rarely 

 diiecioHS ; the iiiiinjiiiiil imcs /listillnli <ir uiulnil, liijulute or bilabiate : stifle as 

 in Tribe V. 



87. CHAPTALIA, Vent. 



Heads niaiiy-fluwcrcd, radiate. Way (lowers pistillate, in two rows, the 

 outer ones lij^ulate, the inner ones ligiilate or 3-5-toothed and filiform. Disk 

 flowers perfect but sterile, hilalnate, the outer lip 3-cleft, the inner 2-cleft. 

 Anthers caudate. Scales of the cylindrical involucre lanceolate, acute, imbri- 

 cated in few rows. Receptacle naked. Fertile achenia oblong, smooth, nar- 

 rowed at each end. Pajjpus of numerous bri.stly hairs. — Stemless perennial 

 herbs; the simple scape bearing a single head of white or purplish flowers. 

 Leaves smooth above, white tomeutose beneath. 



1. C. tomentosa, Vent. — Low ])iue barrens, Florida to North Carolina. 

 Feb. -April. — Scape tomeutose, 6'- 12' high. Leaves spatulate-lauceolate or 

 oblong. Heads nodding. 



Suborder III. LIGULIFLOKvE. 



Tribe VII. CICHORACE^'E. Sti/le cylindrical above and pubescent, like 

 the rather obtuse branches : the stigmutic lines terminating below or near the 

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



88. APOGON, Kll.. 



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

 rows, nearly as long as the corolla, conniveut iu fruit. Receptacle naked. 

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

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

 toothed leaves, and single or umbellate heads of yellow flowers, borne on 

 slender peduncles. 



1. A. humilis, Ell. — Fhirida to South Carolina, April - May. — 

 Stem leaves clasping; the uppernio.>t mostly opposite. — Plant 6'- 12' high. 



89. KRIGIA, Schreb. 



Heads many-flowered. Scales of the iuA'olucre 6-15. Achenia short, ob- 

 long or top-shaped, ob.scurely 4-angled, not beaked. Pappus double ; the 

 outer of very small chaffy scales ; the inner of bristles. — Perennial or annual 

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

 long peduncles or scapes. Leaves alternate, entire or pinnatifid. 



§ 1. Annual, nearly stemless: scales and bristles of the pappus 5: achenia 

 top-shaped. — Krigia proper. 



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

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

 glaucous ; the lowest rounded, entire ; the others spatulate-ol)long, piimatifid. 

 — Dry sandy soil. March -May. — Scapes at length 1° high. 



