COMPOSITAE. 



[Vol.. III. 



16. Aster Shortii Hook. 

 Aster Short ii Hook. Fl. Bor. Am. 2: 9. 1834. 



Stem roughish or smooth, slender, panicu- 

 lately branched above, 2-4 high. Leaves 

 thick, glabrous or nearly so above, finely 

 and sparingly pubescent beneath, the lower 

 and basal ones ovate or ovate-lanceolate, 

 cordate at the base, acute or acuminate at 

 the apex, slightly dentate, or entire, 2'-6' 

 long, i / -2 / wide, borne on slender naked 

 petioles; upper leaves lanceolate, entire, ses- 

 sile or short-petioled, not cordate, those of 

 the branches small and bract-like; heads 

 numerous, 5 // ~7 // high; involucre broadly 

 campanulate, its bracts linear, acute, puberu- 

 lent, imbricated in several series, their green 

 tips appressed; rays 10-15, linear, violet-blue, 

 5 // -6 // long; pappus tawny. 



On banks and along edges of woods, western 

 Pennsylvania to Virginia and Georgia, west to 

 Illinois and Tennessee. Sept.-Oct. 



15. Aster anomalus Engelm. 

 Many-rayed Aster. (Fig. 3749.) 



Aster anomalus Engelm.; T. & G. Fl. N. A. 2: 



503- 1843. 



Stem rough, rather stout, branched above, 

 i-3 high. Leaves thin, the lower and basal 

 ones deeply cordate, ovate, or ovate-lanceo- 

 late, entire or slightly repand, rough-pubes- 

 cent on both surfaces, acute or acuminate at 

 the apex, 3 / ~4 / long, \ f -i f wide, on slender 

 naked petioles; upper leaves short-petioled 

 or sessile, lanceolate, oblong, or linear, much 

 smaller; heads few, 4 // -6 // high, I2 // -I5 // 

 broad; receptacle hemispheric, its bracts 

 lanceolate, acute, or acuminate, hirsute, im- 

 bricated in several series, their foliaceous 

 tips spreading or reflexed; rays 30-45, 5 // -6' / 

 long, bright violet-blue; pappus whitish. 



On limestone cliffs, Illinois to Missouri and 

 Arkansas. Sept. 



Short's Aster. (Fig. 3750.) 



17. Aster azureus Lindl. Sky-blue 

 Aster. (Fig. 3751.) 



Aster azureus Lindl.; Hook. Comp. Bot. Mag. 1: 



98. 1835. 



Stem slender, stiff, rough, branched above, 

 i-4 high. Leaves thick, usually all entire, 

 scabrous on both sides, the lower and basal ones 

 cordate, ovate, ovate-lanceolate, or lanceolate, 

 acute, acuminate, or obtusish, 2 / -6 / long, with 

 slender naked often pubescent petioles; upper 

 leaves short-petioled or sessile, lanceolate or 

 linear, those of the branches reduced to small 

 appressed bracts; heads numerous, 4 // -5 // high; 

 involucre turbinate, its bracts glabrous, linear- 

 oblong, abruptly acute, imbricated in several 

 series, their green tips appressed; rays 10-20, 

 bright blue, 3 // -4 // long; pappus tawnj\ 



On prairies and along borders of woods, western 

 New York to Georgia, west to Minnesota, Missouri 

 and Texas. Aug. -Oct. 



