422 0i«)2K 70.— COMPOSITE. 



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

 crowded heads, forming a compound panicle of leafy racemes, Hoads small, each 

 with about 12 rays, which are white or with various shades of blue. Ljave3 

 • becoming smaller above, lanceolate and even linear. Sept. 



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

 flowered; lvs. oblong-cordate, amplexicaul, entire, hairy, somewhat undulate or 

 crenate-serrate, lower ones ovate, cordat?, subserrat?, with winged petioles; 

 invol. closely imbricate. — Dry wood*, U. S. Plant rough, about 2f high, with 

 slender branches. Lewer lvs. on winged petioles, cordate, acuminate, upper ones 

 becoming narrow-ovate and clasping. Fls. pale blue, solitary or somowhat clus- 

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



8. divkrsifolius. Very slender ; Ivs. shorter in proportion, ovate and oblong; 

 branches slender, 1-flowcivd. — South (PonJ.) (A diversifolius, Mx.) 



11 A. azureus Lindl. Scabrous; st. and racemous-panicu'atc branches slender 

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

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

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



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

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

 cle:!, with middle sized heads, sometimes reduced to a single raccmo or head [ 

 Pays blue. Aug., Oct. — (Should the scales becomo looso and somewhat spreading, 

 it would bo A. anomalous Engelm. ex. descr.) 



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

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

 ones sessib and obtuse at base; hds. middle-size, racemous or racemous-panieu- 

 late, rather lmmerou^; invol. broad-campanulute ; scales scarious, close, green- 

 tipped, shorter Ham the disk flowers. — A distinct and beautiful species, on rocky 

 banks of streams, Ohb to Ark. Stem a little ilexuous, 2 — 4i'high. Lower leaves 

 about 5' by \\', tli3 others successively diminished upward.i to tho flowers where 

 they are minute. Pays violet blue. 



13 A. squarrosus Walt. Very slender, scabrous, with long, simplo branches; 

 lvs. very small, triangular, cordate-amplexicaul, reflexed-squarrous ; hds. terminal; 

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

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

 rigid, shrubby at base. Lower lvs. remote, 1' long, mid:llo and upper crowded, 

 stiff, mucronato, 1 to 2" long. Hds. middlo size, with noar 20 showy bluo rays. 

 Pappus rather tawny. Sept. — Nov. 



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

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

 midcein, tho summit being free. — A still moro curious specios, found in Fla. to 

 La. Sts. shrubby at base, 1 to 2f high. Lvs. as small a3 in tho last, hds. and 

 fls. also similar. Sept. — Nov. 



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

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

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

 ceous. — Grows in moist grounds, Mass., N. Y., to Ga. (I^eay, Pond.) St. 2 to 3i 

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

 -I to \ as wide. lids, large, with 20 to 30 violet-colored rays. Pappus tawny. 

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



B. PIILOUIFOLIUS. Simplo or racemous-paniculate; lvs. lance-ovate, cordate- 

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

 deeply tawny. — N. Y. to Ohio. 



16 A. Novae AnglicO L. lids, terminal, crowded, tomewhat fasligiatc ; st. hispid, 

 paniculate; lvs. linear-lanceolate, amplexicaul, auriculato at base; scales equal 

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

 largo and beautiful Aster, in fields, meadows and shades, more common in tho M. 

 and W. States than in N. Fug. 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. Pay-fls. deep purple, numerous 

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



