428 Oedeb 10. — COMPOSITE. 



lucre nearly in one row and equal ; pappus generally simple. — Herbs 

 Tjith alternate Ivs. Eays cyanic. Disk yellow. 



5 E.iys mintito, shorter than tho cylindrical involucre. Pappus simple Nos. 1, 2 



i Kays long, showy, 30 to 40. Pappus simple. Leaves all radical No. 3 



^ Kays long, ahowy, 50 to 200. — Pappus simple. Leaves clasping Nos. 4 — 5 



— Pappus double. Leaves sessile, &c Nos. 7 — i> 



X E. Canaddnse L. Invol. oblong ; rays numerous (40 — 50), crowded, minute; 

 pappus simple ; st. hairy, paniculate ; Iva. lanceolate, lower ones subserrate. — A 

 very commoa annual plant of no beauty, growing by roadsides and in fields, 

 throughout N. Am. Stem ^ — 9f I high, branching, hairy and furrowed. LeaycH 

 ',-ery narrow, with rough edges. Flowers white, very numerous, small, of mean 

 appearance, irregularly racemous upon the branches, and constituting a large, ob- 

 long panicle. The plant varies greatly in size, according to the soil. — A starved 

 form is E. pusillum Nutt. 



2 B. divaiioatum Mx. Decumbent and diffusely branched, hiraute ; Ivs. linear 

 .md subulate ; hds. very small, loosely corymbous ; rays minute. — Dry soil, "W. 

 States S. to La. Plant of a greyish or bluisli aspect, 3 — 6' high, but at length 

 spreading 1 — 2f. Leaves 4 — 12" by l — 1" Ptays purplish. June — Aug. 



3 E. nudicaille Mx. Glabrous ; Ivs. obovato or spatulate, radical, rosulate, en- 

 tire ; one or two sessile, bract-like on the simple stem or scape ; hds. few, corymb- 

 ous ; invol. hemispherical; rays narrow, 30 or more, conspicuous. — Pine barrens, 

 Ya. to Pla. and La. Lvd. about 2' long. Scape 18' high, very slender. Riiys 

 white. May, Jn. 



4 E. bellidifolium Muhlenb. Robins' Plantain. Hirsute ; radical Ivs. obo- 

 vate, obtuse, subserrate ; st. Ivs. remote, mostly entire, lance-oblong, acute, clasping ; 

 hds. 3 — 1, in a close, terminal corymb ; rays 50 to 60, nearly twice longer than tho 

 involucre, linear-spaiulate. — Dry fields and thickets, U. S. and Can. Stem erect, 

 simple, sometimes stoloniferous, 1 — 2f high. Ijcaves 2 — 3' by 6 — 9", mostly 

 broadest above the middle. Rays bluish (rarely reddish)-purple. This Ls our ear- 

 liest species, flowering in May and June. Resembles the following. (E. pulchel- 

 lum Mx.) 



5 E. Philadelpbicum L. Pubescent or hirsute ; hs. thin, lower spatulate, cre- 

 nate-denlate, upper oblong-oblanceolate, narrowed to the clasping (sometimes cor- 

 ilate-auriculate) base, subserrate; hds. few, on long, slender ped. ; rays \5Q to 

 200, filiform, more than twice longer than the invol. — "Woods and pasture.^! 

 fliroughout K Am. St. slender, 1 to 3f high. Lvs. 2 to 4' by 6 to 9", lower 

 much attenuated at base, upper acute. Eays reddish-purple or flesh-colored, 

 nearly as slender as hairs. Jn. — Aug. 



j3. EiCAEDi. Cauline lvs. cordate-ovate. Meriden, K. H. (Ricard). 

 r. St. stout, with coarsely serrate lvs., approaching the next. 



G B. queroifolium Lam. Pubescent; rt. lvs. oblong-obovaie, lyraie-pinnatifid, or 

 deeply simmte-toothed, the cauline sharply serrate, clasping ; upper entire ; hde. 

 .small, numerous, corymbous, with innumerable filiform ray.s, twice longer than 

 the invol. — S. Car. to Pla. and La. Differs from the preceding in its smaller and 

 more numerous hds. as weU as its lvs. Rays pale purple. Mar. Jn. 



7 E. annutim Pers. Common Fleae.ane. WniTE-WEED. Hirsute, with scat- 

 tered hairs, branching; lvs. coarsely serrate, ike lowest ovate, contracted at base 

 iuto a winged petiole, stem leaves ovate-lanceolate, sesaUe, acute, the highest lan- 

 ceolate ; rays very numerous and naiTow ; pappus double. — A common weed, in 

 lields and waste grounds, Can. to Penn. and Ivy. Stem thick, 2 — 4f high, striate, 

 terminating in a large, diffuse, corymbous panicle of large heads. Rays white or 

 purplish, 100 or more, short. Jn. — Aug. (E. heterophyllum Muhl.) 



3 E. strigosum L. Plant, rough, with short, appressed hairs, or nearly smooth ; 

 ^f,'. lanceolate, tapering to each end, entire, or with a few large teeth in the middle, 

 lower ones 3-veined and petiolate ; pan. corymbous ; pappus double. — A rough 

 weed, in grassy fields. Can. and U. S. St. about 2f high, slender, furrowed, with 

 close, short, stiff hairs, and bearing a large, loose corymb. Lvs. also with close- 

 pressed bristles, sessile. Rays very narrow, white. Jn. — Oct. 

 )':!. St. simple, smooth; Iva. entire, pubescent; fis. corymbed; rays 100 to 150. 

 (E. integerrifblium Bw.) 



