296 SYNGENESIA.— SUPERFLUA. 



panicle divaricately dichotomous ; scales of the 

 calyx loose, linear. * 



HAB. Mountains. Sept. U . Stem 12 in. high ; 

 leav. large ; JI. izh. 



27. A. dracunculoides : leaves linear, acuminate, en- 

 tire ; lower linear-lanceolate, slightly serrate ; 

 branches corymbose ; calyx imbricate ; stem 

 nearly smooth. 



HAB. Fields. Sept.— Oct. U. Stem 3 ft. high,; 

 JI. small, wh. 



b Flowers panicled. 



28. A. amplexicaulis : leaves ovate-oblong, acute, am 



plexicaul, cordate, serrate, smooth ; stem panicu- 

 late, smooth ; branches 1 — 2-flowered ; scales of 

 the calyx closely imbricate. 



HAB. Dry woods. Sept.— Oct. U. Stem 18 in. 

 high ; JI. blue. 

 *9. A. laevigatas: leaves subamplexicaul, broad-lan- 

 ceolate, subserrate, smooth; stem much branched, 

 smooth ; branches many-flowered ; scales of the 

 calyx lanceolate, loose, equal to the disk. 



HAB. Low grounds, Oct. H . Stem 2—3 ft. 

 high ; fl. pale pur p. 

 3Q. A. versicolor: leaves subamplexicaul, broad-lan- 

 ceolate, subserrate, smooth; radical ones serrate in 

 the middle ; stem much branched, smooth ; scales 

 of the calyx lanceolate, loose, shorter than the 

 disk. 



DAB. Fields. Sept.— Oct. U. Stem 2 ft. high ; 

 Ji. pale blue or inhite. 

 31. A. mutabilis : leaves subamplexicaul ; upper ones 

 lanceolate, acuminate, very entire ; inferior lan- 

 ceolate, narrow at the base, serrate ; branches 

 virgate ; calyx loose, shorter than the disk ; stem 

 smooth. 



11AB. Fields and dry woods. Sept. U. Stem 

 2—3 //. high ; JI. pur p. 

 £2; A. laevis : leaves subamplexicaul, remote, oblong, 

 very entire, shining ; radical oneg subserrate : 

 branches simple 1 -flowered, scales of the calyx 

 subcuoeiform, acute, thickened at the tip ; stem 

 smooth angular. 



