COMPOSITOR. 163 



5. A. speclabilis Ait. : stem scabrous, corymbose at the summit ; leaves 

 oblong-lanceolate, very rough ; upper sessile and entire ; lower serrate and 

 petioled ; involucre hemispheric ; scales numerous, obtuse, squarrose, glan- 

 dular-pubescent. A. grandiflorus Walt. A. elegans WiUd. 



Sandy soil. Mass, to Flor. W. to Ken. Aug. Nov. '^.Slem 2 feet high ; 

 branches 2 or 3-flowered, somewhat hairy. Heads 10 15 in a corymb, large 

 and blue. Showy Aster. 



6. A. gracilis Nutt. : stem slightly pubescent, corymbose at the summit ; 

 leaves roughish, obscurely crenulate-serrate ; radical oblong or spatulate, 

 or naked petioles ; cauline oblanceolate or narrow oblong, slightly clasping ; 

 heads in a spreading corymb ; involucre obconic, as long as the disk ; scales 

 whitish and coriaceous, with spreading tips. 



Pine barrens. N. J. W. to Tenn. Sept. Q. Stems several, often from the 

 same surculose caudex, about a foot high, simple or with corymbose flowering 

 branches. Heads about 30-flowered ; rays violet. Resembles the preceding. 



Slender Aster. 



7. A. Radula Ait. : stem smoothish, angular, corymbose ; branches few 

 and nearly naked ; leaves lanceolate, attenuate at both ends, rugose, very 

 rough, coarsely serrate in the middle; scales of the involucre imbricate, ob- 

 long, somewhat acute, spreading at the tips. A. nudiflorus Nutt. 



Low grounds. Nova Scotia and Maine to Penn. ; rare. Aug., Sept. 'Zj-. 

 Stein 1 3 feet high, with a few spreading branches at the summit, purplish. 

 Leaves numerous, about 3 inches long. Heads few, large, on peduncles 2 or 3 

 inches long ; rays numerous, pale purple ; disk yellow. Rasp-leaved Aster. 



8. A. NovcE-Anglia Linn. : stem stout, hairy, corymbose at the summit ; 

 leaves narrow-lanceolate, hairy, clasping, auriculate, crowded on the 

 branchlets ; scales of the involucre subulate-linear, viscid, as long as the 

 disk. 



Meadows. Can. to Car. Sept. Nov. 1|.. Stem 3 6 feet high, almost 

 hispid, with spreading branches. Heads large, in a loose terminal panicle ; rays 

 purple ; disk yellow. A very ornamental species. New England Aster. 



9. A. patens Ait. : stem hairy, paniculate at the summit ; leaves oblong- 

 ovate, cordate, clasping, rough, entire ; those of the divaricate slender 

 branches very small ; scales of the involucre imbricate, linear-lanceolate, 

 somewhat rough, spreading. A. ampkxicaulis Mich. 



Moist grounds. Mass, to Flor. W. to Texas. Aug. Nov. 7[. Stem 13 

 feet high, slender, rough, with spreading branches. Leaves of the branches 

 small and bract-like. Heads middle-sized, subsolitary on the slender branches ; 

 rays purplish-blue. Spreading Aster. 



10. A. phlogifolius Muhl. : stem very simple, pubescent, paniculate above ; 

 leaves oblong-lanceolate, entire, narrower below the middle, auriculate and 

 clasping at base, tapering to an acute point, pubescent beneath ; scales of 

 the involucre loose, imbricate, lanceolate. A. patens,\a.r. phlogifolius Nees. 



Moist grounds. N. Y. to Car. Aug Oct. f l\-. Stem 1 3 feet high. Leaves 

 larger than in the preceding, auriculate-cordate and a little dilated at base. 

 Heads few ; rays purplish. Phlox-leaved Aster. 



*** Scales of the involucre more or less membranaceous on the margin. 

 Bristles of the pappus soft, capillary, nearly equal. Receptacle alveolate- 

 toothed. Achenia. smooth or slightly pubescent. GENUINI Nees. 



