198 coMPOSiTiE. (composite familt.) 



aprini/i an3 jipaiv, an old man, suggested by the hoary appearance of some of 

 the vernal species.) 



§ 1. C-ffi!NOTTJS, Nutt. — Bays inconspictious, in several rows, scared;/ longer than 

 the pappus: disk-coroUas 4-toothed : pappus simple : annuals and biennials: heads 

 very small, cylindrical. 



1. E. Canadense, L. (Hokse-weed. Bittter-weed.) Bristly- 

 hairy; stem erect, wand-like (5'- 5° high); leaves linear, mostly entire; tliose 

 from the root cut-lohed ; heads very numerous, panicled. — Waste places ; a com- 

 mon weed, now widely diffused over the world. July -Oct. — Ligules much 

 shorter than their tube, white. 



2. E. divaricatum, Michx. Diffuse and decumbent (3' - 6' high) ; leaves 

 linear or awl-shaped; heads loosely corymbed; rays purple: otherwise like No. 1. 

 — Illinois, Kentucky, and southward. 



§ 2. EUEUf GBRON, Torr. & Gr. — Rays elongated, crowded in one or more 

 rows : pappus simple. {Erect perennials : heads somewhat corymbed.) 



3. K. 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 broadly linear, light bluish-purple. — Copses and moist 

 banks; cowmon. May. 



4. E. Philadelphicuni) L. (Fleabane.) Hairy ; stem leafy, cor- 

 ymbed, bearing several small heads ; leaves thin, with a broad midrib, oblong ; 

 the upper smootMsh, clasping by a heart-shaped base, mostly entire ; the lowest 

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

 (E. purp6reum, J.;<.) — Moist ground; common. June -Aug. 



§ 3. STENACTIS, Cass. — Some of the outer bristles of the pappus short and 

 minute, or rather chaffy: otlierunse as § 2. 



5. E. glabellum, 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, St. Croix 

 River, Wisconsin, and northwai'd. June. 



5 4. PHALACR0L6MA, Cass. — Rays numerous, but nearly in a single row, 

 conspicuous : pappus plainly double, the outer a crown of minute cliaffy-bristle-form 

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

 ing in the ray : annuals and biennials. 



6. E. Aimuuni, 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 

 ovat«-lanoe61ate, acute and entire at both ends ; heads coiymbed ; rays white, 

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

 phyllum, MuM. E. stiigosum, B^cZ.) — Fields and waste places; a very 

 common weed. (Nat. in Europe.) June -Aug. 



