90 SYNGENESIA. SUPERFLUA. 



29s. ASTER. Xutt. Gen. 659. 



[Gr. AsUr, a Star; from the appearance of its radiated flowers.} 



Cal- imbricate, lower scales spreading. Radial florets generally more than 10. Pappus pilose. 



§1. Leaves entire- 



A. LiNAHiiFOLius. EN- Leaves numerous, linear, snucronate, margiiw scabrous; corymb umbellate. 



Synon. Chrysopsis linariifolia. Nutt. 



Fl Middle of September. Fr. mat. Middle of October. 



Hah. Dry, hilly woodlands: Barrens, &c. frequent. 9 to 18 inches high: rays purple, disk yellow. 



A. TENiriFOLius .' Ell. Much branched; leaves lance-linear; flowers racemose on the main branches. 

 Fl- Latter end of August, and after. Fr. mat. Latter end of September., 



Hab. Old fields; roadsides, &c- very common. 1 to 3 feet high: flowerssmall; ray.s white. 



Obs. This is a very abundant, and rather troublesome weed, in all our old fields, and pastures. The flow- 

 ers are about the size of a half dime, very numerous, and wliite. I have other specunens, which approacli 

 it very nearly, with pale purple rays. Indeed, I think we have what might be enumerated as the A. encoi- 

 des, A. multijlorus, and A- dumosus, of the books; but not being able to determine them satisfactorily, I 

 shall pass them over for the present. 



A. HUMiLis. Ell. Leaves lance-oval, acuminate at each end, margins hispid; corymb sub-dichotomous 

 Synon. A. cornifolius. IVilld. Muhl. A. iiifirmus. Mx- Chrysopsis humilis. Nntt. 

 Fl- Middle of August, and after. Fr. mat. Last of September. 



Ilab- Woodlands: Patton's; Barrens, &c. frequent. 1 to 2 feet high; flowers large; rays white. 

 A. sALiCiFOLius? Ph. Stemsimple,corymbose above; leaves lanceolate, acuminate, tapering at base. 

 Fl- Beginning of September. Fr- mat. Beginning of October. 



Hab. Moist woodlands: Patton's &c. frequent. 2 to 4 feet high: rays white, rarely purplish. 



Obs. Mr. Schweinilz considered this the A. salicifolius; but it fits the description of A. amyf^dalinus 

 80 well that I cannot help entertaining some doubts on ihe subject. The margins of the leaves ore scab- 

 rous; the stem coiymbose at summit; and the flowers mostly with long, narrow, white rays— rarely of a 

 pale blush color. 



A. PHLOGiFOLius. Ph- Leaves lance-oblong, base cordate,amplexicaul; panicle lax, few-flowcved , 

 Synon. A. amplexicauhs. 3Ix- A- undulatus? Ell- 



Fl. Latter end of August. Fr. mat- Last of September. 



Hob- Woodlands: Bath; Patton's, Stc frequent. 1 to 2 feet high: rays violet-purple. 



§2. Leaves serrate: cordate, and ovate. 

 A. DivERSiFOLius. Ell Lowcr leaves with winged petioles, upper sessile; panicle lax, branches racemose. 

 Synon. A. undulatus. Willd- Ph. 



Fl- Middle of September. Fr. mat. Middle of October. 



Hab- Woodlands, and fence-rows: frequent. 2 to 3 feet high: rays pale blue, or violet- 



A. coRDiFOLius. Ell. Lower leaves cordate, acute, upper spathulate-ovate; petioles winged , hairy. 

 Fl- Middle of September- Fr- mat. Middle of October. 



Ilab- Woodlands: Patton's, &c. frequent. 1 to 2 feet high: rays pale purple, long. 



A. coRYMBOsus. Ell- Leaves ovate, acuminate, acutely serrate, petioles naked; corymb sub-fastigiate. 

 Fl- Latter end of July, and after. Fr. mat. Middle of September, and after. 



Hab. Borders of woodlands; roadsides, &c. frequent. 1 to2feethigh; rays white. 



A. MACROPHTLLrs. Ph. Lower leaves petiolate, oblong-cordate, serrate, large, upper ones sessile, ovate. 

 Fl. Middle of August, and after. Fr. mat. Latter end of September. 



Hab. Woodlands: Bath, &c. frequent. 1 to 2 feet high : rays white, sometimes pale blue. 



§ 3. Leaves lanceolate, and ovate : lower ones serrate. 

 A. s^JEviGATVa? Ell. Branching; glabrous; leaves lanceolate, sub-amplexicaul, upper ones nearly entire. 

 Fl. Beginning of September. Fr- mat. Middle of October. 



Hub- Woodlands: Bath, Sec. frequent. 2 to 3 feet high: rays reddish blue, long. 



Oft.-!- Mr. Schweinitz called this A. Isvigatus; but if the A. lavis, of Willdenow, is really a distinct spe- 

 cies, I should incline to refer my specimens to the latter. 



A. VERSICDI.OR? Ell. Much branched; leaves sub-amplexicaul, broad-lanceolate, upper ones entire'. 



Fl- ISIiddle of September. Fr- mat- Middle of October. 



//a&. Hilly fields, and uplands: frequent- 1 to 2 feet high: flowers small, numerous, rays white. 



Obs. The branches are 'crowded with flowers, and thickly 5et wilh small, oval, entire leaves. 



