ORDER 70. COMPOSITE. 166 



ive. long (4-60, lanceolate, acuminate ; sc. obtuse ; fr. pubes. in lines. Low grounds 

 2 4f. Steins purplish. Rays about 12, 34" long. Handsome. 

 ft. amys-ftalinus. St. roughish above ; Ivs. ovate-lanceolate ; sc. rather loose. 2-3f 



3 D. cornliolius Less. Rough above, some hairy in lines ; hds. few, corym.-panicu 



late : Ivs. elliptical, thin, long-pointed both ways, entire ; scales shorter than the disk, 

 obtuse ; cypsela glabrous. Woods. Can. to Car. 1 2f. Rays about 10, white. 



4 D. ofoovatus (Ell.) Cinereous-pubescent: heads corymbed : Ivs. obovate-oblong. 



acute ; sc. lin.-subulate, rusty yellow ; fr. villous ; rays white. Damp shades, S. 281 



20. ERIGERON, L. FLEABANE. WHITE-WEED. Heads subhemi- 

 spherical. Ray-flowers $ (40200), narrow, linear. Fis. of the disk 2 , oo 

 Kecep. flat or convex, naked, liivol. scales nearly in one row and equal. 

 Pap. generally simple. Herbs with alternate Ivs., rays cyanic, disk yellow 



Rays minute, shorter than the cylindrical involucre, white. Pappus simple 1, 2, 10. 



Rays long, showy, 3040. Pappus simple. Lvs. all radical. Hds. corymbous..No. 3 



Rays long, showy, 50 200. <i Pappus simple. Leaves clasping. Corymbous. ..Nos. 4 



a Pappus double. Leaves sessile. Corymbous Nos. 7 9 



1 K. Canadense L. Erect ; invol. oblong ; rays 4050, crowded, minute ; pap. sim- 



ple ; stem hairy, paniculate ; leaves lanceolate. A common weed. G' 6f. Jl. Oct. 



2 E. divarlciktum MX. Decumbent and diffusely branched, hi r sute ; Ivs. linear anr 



subulate ; hds. very small, loosely corymbous. @ Dry soil, W. and S-W. & 2f. Purp 



3 E. uudicaule MX. Glabrous ; Ivs. obovate or spatulate, radical, rosulate, entire 



hds. few; rays narrow, white. "U Pine-barrens. S. Scape bracted, slender. 18'. Jn. Ji. 



4 E. bellidifollum Muhl. Robins* Plantain. Hirsute; radical Ivs. obovate. obtuse, 



subserrate ; stem Ivs. remote, mostly entire, clasping ; hds. 3 7 ; rays 50 GO, purple, 

 linear-spatnlate. ii Dry soils : common. 1 2f. May, June. Handsome. 



5 E. 1'Iiiladelpliicum L. Pubescent or hirsute; Ivs. thin, lower spatulate, cre- 



nate-dentate, upper clasping, sometimes cordate-auriculate ; heads few, on long, slen- 

 der ped. ; rays 150-200, filiform, reddish. 11 Damp: com. 2f. St. Ivs. various. Jn.-Aug. 



6 E. quercllolium Lam. Pubescent : root Ivs. oblong-obovate, lyrate-pinnatifid, or 



deeply sinuate-toothed, the canline sharply serrate, clasping ; heads GO, small, with 

 innumerable filiform flesh-colored rays, y Low grounds. S. May. 



7 E. uiinuum Pers. Common Fleabane. White-weed. Hirsute, branching; leaves 



coarsely serrate, ovate to lanceolate, the lower on winged stalks ; rays very numerous, 

 narrow, white. (T) (a) Fields : common. 2 4f. June Aug. 



8 E. strigosum L. Rough, with ?hort, appressed hairs, or nearly smooth ; Ivs. lan- 



ceolate, tapering to each end, entire, or with a few large teeth in the middle, lower ones 

 3-veined and petiolate ; pan. corymbous, white. Grass lands : com. 2f. Jn. Oct. 



9 E. glabellum Nutt. Lvs. smooth, entire, spatulate, long-tapering at base, upper 



lanceolate and lance-linear, sessile, acuminate ; heads 4 6, pubescent ; rays very nu- 

 meious, pale blue. Wis. to Dak. W W. July, Aug. 



10 E. acre L. Erect, If; Ivs. entire, oblong to lanceolate ; heads few or many, hcmi 

 spherical, with bluish-purple rays as long as the pappus. Lake Superior (Porter;. 



21. CALLISTEPHUS, Cass. CHINA ASTER. Ray flowers ?, oo, disk- 

 flowers fr. Involucre hemispherical. Itecep. subconvex. Pappus double, 

 each iu - series, outer series short, chaffy-setaceous, with the setae united 

 iiitr a crown ; inner series oflong, filiform, scabrous, deciduous bristles. 

 C. CHINENSIS. Stem hispid ; branches divergent. 1-flwd. ; leaves ovate, coarsely dentate, 



petiolate, cauline one* sessile, cuneate at b:ise. China ? Cultivation has produced 

 innumerable varieties, double and semi-double, of every color. Aug., Sept. (T) 



22 BELLIS, L. GARDEN DAISY. Rays GO, 9. Disk 9. Involuccl 



