422 OftDEB 70.— COMPOSITE. 



2 — if high, dividing into many ascending, rigid branches, with numerous and 

 crowdeidheada, forming a compound panicle of leafy racemes. Heiads. small, eai^ 

 with about 12 rays, which are white or with various shades of blue. Leave'si 

 becoming smaller above, lanceolate and even linear. Sept. 



10 A- unduiatus L. St. paniculate, puberulent; branches braoted, 1 (or few)- 

 flowered ; Ivs. oblong-cordaie, amplexicaul, entire, hairy, somewhat undulate or 

 crenate-serrate, lower ones ovate, cordate, subaerrate, with winged petioles; 

 invol. closely imbricate. — ^Dry woods, TJ. S. Plant rough, about 2f high, with 

 slender branches. Lewet Iva. on winged petioles, cordate, acuminate, upper ones 

 becoming narrow-ovate and clasping. Pis. pale blue, solitary or somewhat clus- 

 tered, forming a loose, racemous panicle. Aug., Sept. 



p. diveksifSlius. Very slender ; Ivs. shorter in proportion, ovate and oblong ; 

 branches slender, 1-flowered. — South (Pond.) (A diversifolius, Mx.) 



11 A. aziireiis Lindl. Scabroua ; st. and racemous-pauiculate branches slender 

 but rigid ; Ivs. lance-ovate, cordate, slightly serrate, on slender petioles, middle and 

 iiipper ones lanceolate and limear, acute at each end, sessile, entire, highest subulate ; 

 hds. broadly obconio; scales pblong-hnear, ^cute, appressed.— -Woods and prairie^, ,. 

 "VT. States. St. about 2f high. Lvs. of several forms between the lowest ooriliiie 

 to tlip small, subulate, numerous, floral ones of the slender branches. Rao. panl- 

 cled, with middle sized heads, sometimes reduced to a single raceme or head! 

 Rays blue. Aug., Oct. — (Should the scales become loose and somewhat spreading, 

 it would be A. anomalous, Engolm. ex. descr.) 



12 A. Shortii Hook. Slender and nearly glabrous, simple or somewhat brauohed 

 above ; lvs. lance-ovate, deeply cordate, petiolate, long-acuminate, entire, upper 

 ones sessile and obtuse at base ; hds. middle-size, racemous or racemous-panicu- 

 late, rather numerous; invol. broad-campanulate ; scales scarious, otose, green- 

 tipped, shorter than the disk flowers.^ A. distinct and beautiful species,- on rocky 

 banks of streams, Ohio to Ark. Stem a little flexuous, 2-^4f high. Lower leaves 

 about 5' by IJ', the others successively diminished upwards to tlio flowers where 

 they are minute. Rays violet blue. 



13 A. squarrosxis "Walt. Tery slender, scabrous, with long, simple branches ; 

 lvs. very small, triangular, cord£W;e-amplexicaul, reflexed-sqvarrous ; hds. terminal ; 

 invol. obconic, scales imbricated with ovate, green, squarroua points; achenia 

 pubescent. — N. Car. to Pla. in dry soil A very singular Aster, 2f or more high, 

 rigid, shrubby at base. Lower lvs. remote, 1' long, middle and upper crowdeB, 

 stiff, mucronate, 1 to 2" long. Hds. middle size, with near 20 showy blue rays. 

 Pappus rather tawny. Sept. — ^Nov. 



14 A. adndtus N&tt. Scabrous ; sterna and branches ascending, very slender ; 

 lvs. oblong-ovate or lanceolate, approximate, erect, and adherent to the stem by the 

 midoein, the summit being free. — A still, more curious species, found in Pla. to 

 La. Sts. shrubby at base, 1 to 2f high. Lvs. as small as in the last, hds. and 

 fla. also similar. Sept. — Nov. 



15 A. patens L. St. sitnple, paniculate abov^e, pubescent; lvs. ovate-oblong, 

 acute, cordate-clasping, scabrous on tlie margin pubescent; pan. loose; hds. ter- 

 minal on the branchlets ; scales imbricate, lanceolate, lax, onltf the points herin- 

 ceous. — Grows in moist grounds, Mass., N. T., to Ga. (Peay, Pond.) St. 2 to 31 

 high, .slender, branching above into a loose spreading panicle. Lvs. 1 to 3' long, 

 ^ to i} as wide. Hds. large, with 20 to 30 violet-oolore4 rays. Pappus tawny. 

 Aug. — Nov. — Variable. (A. amplexcaulis Willd.) 



B. PHLOGiFOLius. Simple or racemous-paniculate ; lvs. lance-ovate, cordate- 

 auriculate, very acute, edges ciliato; hds. large, spreading 16". Pappus 

 deeply tawny. — N. Y. to Ohio. 



16 A. NovcB Anglias L. lids, terminal, crowded, somewhat fasiigiate; sthispiA, 

 paniculate; lvs. linear-lanceolate, amplexioaul, auriculate at bass; scales equal 

 lax, linear-lanceolate, rather longer than the dialc, green their whole length. — A 

 large aijd beautiful Aster, in fields, meadows and shades, more common in the M. 

 and'W. States than in N. Eng. ' St. 4 to 6f high, straight, erect, viscidly hairy, 

 colored. Lvs. very numerous, entire, with 2 auricular appendages at base. Fls. 

 large, in a kind of loose, paniculate corymb. Ray-fls. deep piirple,' numerous 

 {15 to 100). Pappus deeply tawny. Acli. hairy. Sept f 



