ORDER 70. COMPOSITE. 165 



tvs. long (4-(50i lanceolate, acuminate; PC. obtuse ; fr. pnbes. in lines. Low grounds 

 2 4f. Stems purplish. Ray? about 12, 3 4" long. Handsome. 

 )3. amyscrtalinust. St. rousdiish above ; Ivs. ovate-lanceolate ; sc. rather loose. 2-3f 



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



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

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



4 D. obovatus (Ell.) Cinereous-pubescent : heads corymbed : Ivs. obovatoohlon<* 



acute ; sc. lin. -subulate, rusty yelluw ; i'r. villous ; rays white. Damp sliades, S. 2 :!! 



20. ERIGERON, L. FLEA BAKE. WHITE-WEED. Heads subhenri- 

 spherical. Ray-flowers ? (40 200), narrow, linear. FIs. of the disk 5 , GO 

 Kecep. flat or convex, naked. InvoL 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, 30 40. Pappus simple. Lvs. all radical. lids. corymbous..No. 3 



Rays long, showy, 50 200. a Pappus simple. Leaves clasping. Corymbous. ..Nos. 46 



a Pappus double. Leaves sessile. Corymbous. . ..Nos. 79 



1 E. Canadense L. Erect; invol. oblong; rays 40 50, crowded, minute; pap. sim- 



ple ; stem hairy, paniculate ; leaves lanceolate. A common weed, ' (if. Jl. Oct. 



2 E. divaricatum MX. Decumbent and diffusely branched, hirsute ; Ivs. linear anr 



subulate ; hds. very small, loosely corymbous. Dry soil, W. and S-W. 6' 2f. Purp 



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



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



4 E. bellidifolium Muhl. fiobins" 1 Plantain. Hirsute; radical Ivs. obovate. obtuse, 



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

 linear-spatulate. if. Dry soils : common. 1 2f. May, June. Handsome. 



5 E. Pliiladelpliicum 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, y. Damp: com. 2f. St. Ivs. various. Jn.-Aug. 



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



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

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



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



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

 narrow, white. @ @ Fields : common. 2 4f. June Aug. 



8 E. strjg-osuni L. Rough, with short, 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 lauds : com. 2f. Jn. Oct. 



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



lanceolate and lance-linear, sessile, acuminate ; heads 46, pubescent ; rays very nu- 

 meious, pale blue. Wis. to Dak. 12' 18'. July, Aug. 



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

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



21. CALLISTEPHUS, Cass. CHINA ASTER. Ray flowers 5, GO, disk- 

 flowers $ . Involucre hemispherical. Kecep. subconvex. Pappus double, 

 each in - series, outer series short, chaffy-setaceous, with the setas united 

 intr a crown ; inner series of long, filiform, scabrous, deciduous bristles. 

 C. CUINEXSIS. Stem hispid: branches di verger. t. 1-flwd. ; leaves ovate, coarsely dentate, 



petiolate, cauline ones sessile, cuueate at base. China? Cultivation has produced 

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



22 BELLIS, L. GARDEN DAISY. Ilnys GO, ?. Disk 5. Involuccl 



