42-J OxiDKa 70.- COMPOSITE. 



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

 crowded'heads, forming a compound panicle of leafy racemes. Heads small, each 

 with about 1*2 rays, which are white or with various shades of blue. Leaves 

 becoming smaller above, lanceolate and even linear, bept. 



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

 flowered ; Ivs. oblong-cordate, ainplexicaul, entire, hairy, somewhat undulate or 

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

 invol. closely imbricate. Dry woods, U. S. Plant rough, about 2f high, with 

 slender branches. Lewer Ivs. on winged petioles, cordate, acuminate, upper oneii 

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

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



3. DIVERSIFOLIUS. Very slender; Ivs. shorter in proportion, ovate and oblong; 

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



11 A. azureus Lindl. Scabrous; st. and racemous-paniculate branches slender 

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

 upper ones lanceolate and linear, acute at each end, sessile, entire, highest subulate ; 

 hds. broadly obconic ; scales oblong-linear, acute, appressed. Woods and prairies, 

 W. States. St. about 2f high. Lvs. of several forms between the lowest cordate 

 to the small, subulate, numerous, floral ones of the slender branches. Rac. pani- 

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



11 A. anomalus Eng. Lvs. as in No. 11. Invol. with loose recurved scales. 

 Limestone cliffs. 111. (J. Wolf), Iowa (Dr. Cousins), and Mo. Hds. large, handsome. 



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

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

 ones sessila and obtuse at base ; lids, middle-size, racemous or racemous-panicu- 

 late, rather numerous ; invol. broad-campanulato ; scales scarious, close, green- 

 iipped, 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 1 J', tha others successively diminished upwards to the flowers whero 

 they are minuto. Rays violet blue. 



13 A. squarrostis Walt. Yery slender, scabrous, with long, simple branches ; 

 Ivs. very small, triangular, cordate-amplexicaul, reflexed-squarrous ; lids, terminal; 

 invol. obconic, scales imbricated with ovate, green, squarrous points; aehenia 

 pubescent. X. Car. to Fla. in dry soil. A very singular Aster, 2f or more high, 

 rigid, shrubby at base. Lower Ivs. remote, 1' long, middle and upper crowded, 

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

 Pappus rather tawny. Sept. Nov. 



14 A. adnatus Nult. Scabrous ; stems and branches ascending, very slender ; 

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

 midcein, the summit being free. A still more curious species, found in Fla. to 

 La. Sts. shrubby at base, 1 to 4f high. Lvs. as small as in the last, Ms. and 

 fls. also similar. Sept. Nov. 



15 A. patens L. St. simple, paniculate above, pubescent; Ivs. ovate-oblong, 

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

 minal on the branchlets ; scales imbricate, lanceolate, lax, only the points herba- 

 ceous. Grows in moist grounds, Mass., N. Y., to Ga. (Feay, Pond.) St. 2 to 3f 

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

 ^ to | as wide. Hds. largo, with 20 to 30 violet-colored rays. Pappus tawny. 

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



8. PHLOGIFOLIUS. Simple or racemous-paniculate ; Ivs. lance-ovate, cordate- 

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

 deeply tawny. N. Y. to Ohio. 



16 A. NovcC Anglieo L. lids, terminal, crowded, somewhat fastigiate ; st. hispid, 

 paniculate; Ivs. linear-lanceolate, amplexicaul, auriculate at base; scales equal 

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

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

 and W. States than in N. Eng. St. 4 to Gf 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 purple, numerous 

 (15 to 100). Pappus deeply tawny. Ach. hairy. Sept. f 



