128 GAMOrETALOUS EXOGENS 



Hab. Borders of woods, and thickets : frequent. FL Aug. Fr. Octo. 



Obs. This is a variable plant, and a number of species have 

 been founded on its several features ; but they are all so essentially 

 alike, that they may be safely regarded as mere varieties. 



6. A. UlltluIatllS, L. Roughish-pubescent and somewhat hoary ; 

 leaves cordate and ovate, with wavy and subserrate margins, ab- 

 ruptly narrowed to margined clasping petioles, which are dilated 

 again at base, the upper ones sessile ; involucre obovoid, pubes- 

 cent; akenes slightly pubescent. 

 WAVY ASTER. 



Stem 1 to 3 feet high, often purple, paniculate and frequently bushy at sum- 

 mit, the branchlets leafy. Radical leaves 1 to 2 inches long, oblong-cordate, 

 sometimes reniform ; petioles 1 to 3 inches long ; stem-leaves 1 to 3 or 4 inches long, 

 those on the branches small and bract-like, oblong, eiliate. Heads of flowers 

 medium size, somewhat racemose; rays pale violet-purple, or bluish; disk yellow, 

 becoming purplish ; akenes finally smoothish. 

 Hab. Dry woodlands; fence-rows, &c.: common. Fl. Sept. Fr. Octo. 



Obs. This is another variable species as, indeed, there are many, 

 but they have been, generally, well and judiciously disposed of, 

 by TORRE Y and GRAY. 



* * Rays pale purple, or whitish ; heads rather small. 



*7, A. COrdif Mills, L. Stem with pubescent spreading branches 

 above, smooth below; leaves cordate, acuminate, serrate, on ciliate 

 scarcely margined petioles ; involucre obconical, smoothish ; scales 

 all appressed; akenes smooth. 

 HEART-LEAVED ASTER. 



Stem 1 to 2 or 3 feet high, somewhat flexuose, paniculate at summit. Leaves 1 

 to 3 or 4 inches long; petioles 1 to 2 inches long, narrowly margined; upper leares 

 spatulatc-ovate. Heads of flowers racemose-paniculate, with small bracts; rays 

 pale purple, or sometimes nearly white. 

 Hab. Woodlands: freqreat. FL Sept. Fr. Octo. 



8, A. saglttsef oliws, Willd. Stem with ascending paniculate 

 branches ; leaves on narrowly margined petioles, lower ones sa- 

 gittate-cordate, serrate, upper ones lanceolate, acute at each end, 

 often entire ; involucre oblong, loosely imbricated ; scales subulate- 

 linear. 



A. paniculatus. Muhl. $ FL Cestr. ed. 2. p. 464. 

 ARROW-LEAVED ASTER. 



Stem 2 to 3 or 4 feet high, smooth, with numerous erect branches above. Rad- 

 ical leaves 2 to 5 inches long, on petioles 2 to 6 inches in length; stem-leaves gradu- 

 ally smaller, those on the branches sessile. Heads of flowers numerous, racemose- 

 paniculate, the racemes often compound, or thyrsoid, on the branches; rays pale 

 purple, or bluish, sometimes nearly white; disk yellow, or brown; akenes smooth. 

 Hab. Woodlands; along the Brandywine: frequent. FL Aug. Fr. Octo. 

 ** * Rays mostly white: heads small art'l numerous. 



9. A. eriCOldes, L. Diifusely branched ; branchlets subsecund ; 

 leaves spatulate-oblong and linear, nearly entire ; involucre some- 

 what hemispherical, loosely imbricated ; scales linear-oblong, acute. 

 A. tenuifolius. FL Cestr. ed. 2. p. 407. not of Linn. 



ERICA, OR HEATH-LIKE ASTER. 



