SYNGENESIA.— SUPERFLUA. 293 



9. A. sparsijiorus : very smooth ; stem sparingly 



branched, somewhat flexuou3 ; leaves long and 

 succulent ; the inferior ones sublanceolate-linear; 

 superior subulate ; branches one-flowered, leafy ; 

 scales of the calyx lanceolate, acuminate, ap- 

 pressed ; rays numerous, shorter than the calyx. 

 HAB. Salt marshes. Aug.— Oct. U. Stem 12 in. 

 high;fl. large, purp. 



10. A. concolor : leaves oblong-lanceolate, entire, 

 whitish-pubescent on both sides ; stem simple, 

 erect, pubescent ; raceme terminal ; scales of 

 the calyx lanceolate, silky, appressed. 



HAB. Pine barrens. Oct. U. Root of ten tuber .; 

 stem virg. ; Jl. large, blue. 



11. A. salicifolius : leaves linear-lanceolate, nearly 

 entire ; stem smooth, paniculate above ; calyx 

 loose, imbricate ; scales acute, spreading at their 

 points. 



HAB. Low grounds. Sept. U. Stem tall; Jl. 

 middle-sized, reddish-blue. 



12. A. astivus : leaves lanceolate, subamplexicaul, at- 

 tenuated at the apex ; margin scabrous ; stem 

 branched from the base, erect, hispid ; branches 

 hairy; scales of the calyx loose, linear, acute, 

 equal. 



HAB. Dry swamps. Sept. $. Stem 2 ft. high . 

 Jl. middle-sized ; rays blue. 



13. A. novae an glicb: leaves linear-lanceolate, amplexr- 

 caul, auriculate at the base ; stem hairy and pani- 

 culate ; flowers subsolitary on the branchlets. 

 somewhat fastigiate ; scales of the calyx loose, 

 linear-lanceolate, rather longer than the disk. 



11AB. Fields. Aug.— Oct. U. Stem 4— 6 ft. 

 high;Jl. large, purp.-bl. ; rays numerous. 



14. A. cyaneus : leaves linear-lanceolate, amplexisaul. 

 smooth ; stem branched, with the branches ex- 

 panding, very smooth ; flowers in paniculate ra* 

 cemes ; scales of the calyx loose, lanceolate, as 

 long as the disk. 



HAB. Along fences. Sept. U- , Stem 3 ft. high . 

 subgfauc. ; Jl. blue, large. 



15. A. phlogifulius : leaves lanceolate, cordate, am 



plexicaul. pubescent beneath, scabrous on tlie 



