COMrOSIT.'E. (COMPOSITK FAMILY.) 265 



sinc^le row of capillary bristles, with minuter ones intermixed, or with a dis- 

 tinct short outer pappus of little hristles or chaffy scales. — Ilerhs. witli entire 

 or toothed and generally sessile leaves, and stditary or corvnihed nakeil-pedun- 

 culate heads. Disk yellow; ray white or purple. (Name from t}p,.s/)n«r/, and 

 ytpwu, an old man, suf^gested Iiy the hoarine.ss of some vernal species.) 



§ 1. CiKNOTUS. Rai/s iunmspicuous, in several rows, scarcely longer tluin 

 the papftns ; pappus simple ; annuals. 



1. E. Canadensis, L. (IIoitSE-WKi:i>. Buttkk-weed.) Bristly-hairy; 

 sleni erect, inind-like {1 -5° hiijjh) ; leaves linear, mostly entire, the radical cut- 

 lobed ; heads very numerous and small, cylindrical, panicled. — Waste places ; 

 a common weed, now widely diffused over the world. July -Oct. — Ligule 

 of the ray-llowers n)uch shorter than the tube, white. 



2. E. divaricatUS, Michx. DiJ/'use and decumbent (:y-l°hi^h); leaves 

 linear or awl-sha])ed, entire; /leads loosely corymbed; rays purple ; otherwise 

 like n. 1. — Tnd. to Minn., and southward. 



§ 2. TKIMORPILEA. Like § 1, but a series offliform rayless pistillate Jloiv- 

 ers icitliin the outer ruiv oj' ray-JJoicers ; biennial or sometimes perennial. 



3. E. acris, L. Hirsute-pubescent or smoothish ; stem erect (10-20' 

 high) ; leaves lanceolate or the lower spatulate-oblong, entire ; heads several 

 or rather numerous, racemose or at length corymbose, nearly hemispherical 

 (4-5" long), hirsute; rays purplish or bluish, equalling or a little exceeding 

 the copious pappus. — Lower St. Lawrence, across the continent and north- 

 ward. The var. DitoiBACiiENSis, Blytt, more glabrous and with the green 

 involucre nearly or quite naked, occurs on the shores of L. Superior. (Eu.) 



§ 3. ERIGEKON proper. Hays elongated (short in a form of n. 5), crowded 



in one or more rows. 

 * Annuals (or sometimes biennial), lea/y-steinmed and branching ; pappus doable, 



the outer a crown of minute scales, the inner of deciduous fragile bristles, 



usually wanting in the ray. 



4. E. annuus, Pers. (Daisy Fleabane. Sweet Scabioi:s.) Stem 

 stout (.3-.')° high), branched, /;ese^ 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 ; ravs white, 

 tinged with purple, not twice the length of the bristly involucre. — Fields and 

 waste places; a very comnum weed. June -Aug. (Xat. in Eu.) 



5. E. Strigdsus, 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 oblong or spatulate, tapering into a slender petiole; rays white, twice 

 the length of the minutely hairy invcducre. — Fields, etc., common. June- 

 Aug. — Stem smaller and more simple than the last, with smaller heads but 

 longer rays. A form with the rays minute, scarcely exceeding the involucre, 

 occurs in S. New England. 



* * Leaf y-stemmed perennials ; pappus simple {double in n. 6). 



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

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



