Asteroids*] SYNGENESIA 463 



3. A. patexs, Ait. Stem pubescent, loosely paniculate ; leaves ovate- 

 oblong, acute, entire, cordate and amplexicaul at base, scabrous-pubes- 

 cent on both sides ; branches of the panicle spreading, clothed with 

 numerous small leaves; leaflets of the involucre loosely imbricated 

 linear-lanceolate, scabrous, subsquarrose. Beck, Bot. p. 183. 

 A, amplcxicaulis. Mx. Am. 2. p. 1 14. Bigel. Bost. p. 312. Not of 

 mild. Pers. Pursh, Torr. Beck, &c. 

 A. diversifolius. Mx. {fide Neea. et al. sed qu?). 

 A. undulatus. EH. Sk. 2. p. 361. Eat. Man. p. 39. Also Muhl 

 Catal p. 74. Not of mild. Ait. Pursh, Torr. Beck, &c. 

 Sheading Aster. 



Stem 18 inches to 2 or 3 feet high, slender, rough ish-pubescent, branched above • 

 branches often elongated, slender, spreading, and clothed with minute bract-like 

 leaves (var. gracilis, ramis longissimis, foliis parvis. Hook). Leaves half an 

 inch to 2 or 3 inches long, and I fourth of an inch to an inch wide, ovate-oblon* 

 rather acute, scarcely narrowed towards the base, entire, scabrous and serrulate' 

 ciliatc, cordate at base, sessile and amplexicaul. Heads of flowers middle-sized" 

 subsolitary on the slender branches; involucre minutely scabrous, the leaflets 

 lance-oblong, subacuminate, slightly spreading and deeper green at apex ; ray* 

 purplish blue. Akenes very hairy; pappus reddish-tawny. 



Var. b. phlogifolins, J\*ees. Leaves lance-oblong, mostly narrowed 

 below the middle, aunculate at base, somewhat villose beneath • pani- 

 cle few-flowered. JSTecs, Ast. p. 49. 

 A. phlogifolius. Muhl. mild, and the Authors here quoted. 



Stem 1 to 2 or 3 feet high, somewhat villose, often simple. Leaves most'ly larcer 

 than in the preceding (sometimes 5 or 6 inches long, and an inch and half wide) 

 more tapering at apex, generally contracted below the middle, cordate auriculale 

 and a little d.lated at base, more villose beneath, and ciliate on the manrin 

 Heads of flowers often very few ; rays violet-purple. # 



Hub. M)istwjodlands: frequent. Fl. August— Sept. Fr. October. 



Obs. I believe the A. phlo-ifolius has been very properly reduced by Prof 

 See*, to a variety of the A. patens. There seems to be great confusion amon*' 

 Authors respecting the A. diversifolius, of Mx. and the A. undulatus of Lb w 

 Ness and others cite Michaux's diversifolius as a synonym of the patens • but th-it 

 cannot be correct,-for the lower leaves of the diversifolius have wineed vtioU* 

 Elliott, again, says this A. patens is the true undulatus, of Linn according to 

 Smith. I cannot, of course, determine how the fact is ; but I shall, for the ores 

 ent, follow those who appropriate the name, undulatus, to another plant --and 

 which I take to be the /; ue A. diversifolius, Mc. 



§3. QBsmm. Leaflets of the involucre more or less membranaceous on tha 

 margin. Akenes smooth, or sparsely pubescent. 



a. 



Heterophxjllous,—or the leaves of different forma. 



4. A. coRmroLTus, L ? Stem smooth, racemose-paniculate at sum- 

 mit ; leaves cordate, acuminate, serrate, the upper ones spatulate-ovate 

 and lanceolate; petioles margined, ciliate ; involucre closely imbricate 

 Beck, Bot. p. 187. Not of Wees, Ast. 



A. hetcrophyllus. Wees, Ast. p. 55. Also, Pursh, Am. 2. p. 552 

 Lrnul. Ency. p. 710. Eat. Man. p. 44. P ' 



