COMPOSITE. (COMPOSITE FAMILY.) 237 



2. EUERtGERON, Torr. & Gr. Bays elongated, crowded in one or more rows: 

 pappus simple. (Erect perennials: heads somewhat corymbed, middle-sized.) 



4. E. bellidifdlium, Muhl. (ROBIN'S PLANTAIN.) Hairy, producing 

 offsets from the base : stem simple, rather naked above, bearing few (1-9) large 

 heads on slender peduncles, root-leaves obovate and spatulate, sparingly toothed ; 

 those of the stem distant, lanceolate-oblong, partly clasping, entire ; rays (about 

 50) rather broad, light bluish-purple. Copses and moist banks : common. May. 



5. E. Philad61phicum, L. (COMMON FLEABANE.) Hairy ; stem leafy, 

 corymbed, bearing several small heads ; leaves thin, with a broad midrib, ob- 

 long ; the upper smoothish, clasping by a heart-shaped base, mostly entire ; the 

 lowest spatulate, toothed ; rays innumerable and very narrow, rose-purple or flesh- 

 color. (E. purpureum, Ait.) Moist ground : common. June -Aug. 



3. STENACTIS, Cass. Outermost bristles of the pappus short and minute, or 

 rather chaffy, forming an external series : otherwise as 2. 



6. E. glab611um, Nutt. Stem (6' -15' high) stout, hairy above, the 

 leafless summit bearing 1-7 large heads ; leaves nearly glabrous, except the 

 margins, entire, the upper oblong-lanceolate and pointed, closely sessile or 

 partly clasping, the lower spatulate and petioled ; rays (more than 100, purple) 

 more than twice the length of the hoary-hispid involucre. Plains N. Wiscon- 

 sin, and westward. June. 



4. PHALACROL6MA, Cass. Rays numerous, but nearly in a single row, con- 

 spicuous : pappus plainly double, the outer a crown of minute chaffy -bristle-form 

 scales ; the inner of scanty capillary bristles which are deciduous, or entirely 

 wanting in the ray : annuals and biennials. 



7. E. annuum, Pers. (DAISY FLEABANE. SWEET SCABIOUS.) Stem 

 stout (3 -5 high), branched, beset with spreading hairs; leaves coarsely and 

 sharply toothed ; the lowest ovate, tapering into a margined petiole ; the upper 

 ovate-lanceolate, acute and entire at both ends ; heads corymbed ; rays white, 

 tinged with purple, not twice the length of the bristly involucre. (E. hetero- 

 phyllum, Muhl. E. strigosum, Bigel.) Fields and waste places : a very com- 

 mon weed. June -Aug. (Nat. in Eu.) 



8. E. Strigdsum, Muhl. (DAISY FLEABANE.) Stem panicled-corym- 

 bose at the summit, roughish like the leaves with minute appressed hairs, or almost 

 smooth ; leaves entire or nearly so, the upper lanceolate, scattered, the lowest ob- 

 long or spatulate, tapering into a slender petiole ; rays white, twice the length 

 of the minutely hairy involucre. (E. integrifblium, Bigel.) Fields, &c. : com- 

 mon. June - Aug. Stem smaller and more simple than the last, with smaller 

 heads but longer rays. Var. DISCOLDEUM, Robbins, has the rays minute, 

 scarcely exceeding the involucre. Uxbridge, Massachusetts, and adjacent parts 

 of Connecticut and Rhode Island, Dr. Robbins. 



5. ERIGERtDIUM, Torr. & Gr. Rays about 30, in a single row, rather 

 broad : pappus simple : achenia mostly 4-nerved : root perennial. 



9. E. v6rnum, Torr. & Gr. Glabrous ; leaves clustered at the root, 

 oval or spatulate; scape leafless, slender (1- 2 high), bearing 5-12 small 

 corymbed heads ; rays white. (E. nudicaule, Michx. Aster vernus, L.) Low 

 grounds, E. Virginia and southward. May. 



