424 ORDER 70. COMPOSITE. 



24 A. turbinllus Lindl. Smooth or slightly scabrous; branches and branchlcts 

 very slender ; Ivs. lanceolate, taperiny to each end, acute, slightly clasping, entire ; 

 in vol. clavate-turbinate, acute at base, as long as the disk fls. (6") ; scales im- 

 bricated in many rows, linear, obtuse, with short green tips. "Woods and river 

 bottoms, 111. (Mead.), Mo., etc., to La. Sts. 2f high, somewhat corymbou.s. 

 Lower Ivs. 3 to 5' by to 1-J-', the others gradually reduced upwards to the scales, 

 Hds. middb size, with blue rays and brownish pappus. Sept. 



25 A. dtimosus L. Smooth or puberulent; branches racemous-panicled, Ivs. 

 numerous, smooth, linear, sessile, entire or the lowest subserrate, those of tho 

 branches very short ; invol. obtuse at lose, closely imbricate ; scales obtusn. 

 About 2f high, in dry shades and borders of woods, U. S. St. much branched, 

 very leafy, the lower Ivs. 2 to 3' long, tho upper smaller and becoming very minute. 

 HJs. small, with about 24 purplish- white rays. Quito variable in respect to tho 

 extent of its branching inflorescence, tho acuteness and size of its Ivs., the obtuse- 

 ness of its scales, etc. Rt. Ivs. 1 to 3' long, st. arid branch Ivs. 2 to 12''long. Sept- 



/3. CORIDIFOLIUS is a starved, attenuate form, very slender every way. 



26 A. carneus L. Smooth ; st. dividing into many straight, paniculate, leafy 

 branches; Ivs. uniform, linear-lanceolate, acuminato, entire, the lower ones taper- 

 ing to a sessile base, the upper amplexicaul ; scales rather acute^ close, much 

 shorter than the disk. Moist fields, E. and TV. St. 2 3f., often purple, Lvs. 5' 

 to 5 7 . Hds. many, middle size. Rays 20 30, purple to rose-colored. Sept. 

 Oct. 



26| A. mutabilis Willd. St. smooth, paniculate-branched from base, dense- 

 flowered ; Ivs. linear-lanceolate, serrulate, thickish, all clasping, upper lance- 

 oblong, entire ; lids, medium ; scales loose, lanceolate, much shorter than the 

 disk ; rays pale. "Wet soils. III. 2 3f. Varies, with Ivs. serrate, hds. few, etc. 



27 A. ericoides L. Smoothish; branches virgate, branchlets secund, 1 -headed; 

 lv?. spatulate, and linear, and subulate: hds. small; sc. as long as the disk, with 

 subulate, mucronate, spreading tips. Rocky fields. Stem 1 3f. high. 



28 A. racemosus Ell. Rough-pubescent, with many erect branches; Ivs. linear 

 and linear-subulate, very acute, margins very scabrous; hds. spicate-raccmcd 

 and crowded on the upper part of the branches ; scales very acute, as long as tho 

 disk, somewhat spreading, rays very short. S. Car. to Ma. on tho islands and 

 coast. St. 2 to 3f high. Tho very small heads (2" long) are almost raylcss. 

 Sept., Oct. 



29 A. simplex Willd. Glabrous; st. cvnjmbous-panic^ate abovo ; Ivs. lanceolate,, 

 acuminate, entire, the margins scabrous, lower ones S3rrato; scales loosely imbri- 

 cated, linear-subulate. Another variable species in low grounds, U. S, and Can, 

 St. 1 to 5f high, somewhat corymbous. Lvs. 2 to 4T by 5 to 10", very smooth 

 both sides, tapering to a slender point; those of the branches and branchleta 

 proportionately smaller. Hds. rather few, middle size (4 to 5" long) T on tho 

 short branchlets. Sept. Sometimes low with smaller hds., again tall with larger. 



j3. DIVERGEUS. Branches difluse, loosely racemous, pubescent in lines ; 4 Gf. 

 29^ A. subasper Liudl. ? Pubescent above, racemous branched, branches 

 short, dense-flowered; Ivs. lanceolate, acuminate, attenuate to a short petiole, 

 rough, appressed-serrate, the upper reduced, entire, sessile ; invol. closely imbri- 

 cated ; rays purple. Dry, poor soils, 111., scarce, (Mr. J. Wolf.) 2 3f. high, 

 strict. Lvs. 6' 6". Differs from Lindley's in its broader leaves. Sept. 



30 A. tenuifolius L. St. smooth, erect, paniculate-branching, with \-flowcred 

 branchlsts ; Ivs. linear and linear-lanceolate, tapering at each end, long-acuminate, 

 entire, with roughish margins, the lower ones often serrate in the middle ; invol. 

 scales very slender, erect, acute, slightly longer than the disk. Grows in moist 

 fields, E. and W. 2 6f. Lvs. 5' 1'. Rays 20 30, long, pale pnrple. Sept. 



ft. BELLI DIFLORUS. Lvs. scabrous, subclasping ; scales rather loose. Western, 

 y. DISTICHUS. Lvs. and strict branches in 2 rows. Lvs. serrulate. 111. (Mr.J.Wolf.) 



31 A. Tradescanti L. Smooth or smoothish; branches virgate, paniculate; 

 Ivs. lance-linear, the lower remotely serrate, sessile ; invol. closely imbricate ; 

 scales linear-filiform, scarcely equaling the disk. A fine species, with numerous 



