Erigeron. composite. 353 



10. ERIGERON. Unn. ; Torr. 4. Gr. fl. N. Am. 2. ;,. 166. ,,,,,,,^ 



Ebigeron, Stenactis and Phalekocoma, DC. 

 [From the Greek, tr, the spring, and geron, an old man; because it i, hoary early in the ^,„n 



the bald heads of the receptac.'es after the ha'; LTL faUe„T °" ' "" " ""^ '''' '""^ 



Heads mosUyiemisphencal (sometimes cylindrical), many-flowered; the ray-flowers very 

 nnmerous and usually in more tl.an one series, pistillate ; those of the d.sk tabular, perfect- 

 ed some of the exterior filiform-tubular and tntncate, pistillate. Scales of the involucre 

 .mostly equal, narrow, in a single or somewhat double series. Receptacle flat, naked 

 punctate or scrobtculate. Appendages 6f the style very short and obtuse. Achenia com^ 

 pressed, usuafly pubescent, commonly with two lateral nerves. Pappus a single series of 

 captllary rough bristles, often with minute ones intermixed or forming an indistinct outer 

 series, or sometimes with a distinct short scaly setaceous exterior pappus ; the inner pappus 

 rareb. wanting in the ray.- Herbs :or rarely suffrutescent plants, with entire, lobed or 

 toothed leaves. Heads solitary, corymboseor paniculate. Rays white, blue or purple. 



^ 1. CiENOTus, Nutt. Raj/s in several series, shorter than the involucre ■ r.nr> 



^^:^. , the .. .., ...... wf-tii-s:;.r!i::n: 



1. Erigero.x Canadense, Linn. Horse-weed or BuUer-weed 



lanrlnirr' ^"f T '°'"''''"'' ''^''"^''^' P--»'-^<=ly ^^ry much branched above • leaves 

 anceolate-linear, the lower ones somewhat serrate , upper ones entire, hispidly ciliat ■ head 

 very numerous, corymbosely paniculate and crowded ; rays (white) shorter ZTT ' 

 achenia sparsely hispid.-Z.. ,,. .. ,. S63 ; FL Bar., l^^;^. ^ '^^ 

 fl. 2. p. 534 ; Nutt. gen. 2. p. 148 ; Ell. sk. 2. p. 397 ; Torr. compend ry 291 HnZ I' 



p 208 ^'^' '■ '■ '''■ ^- '"^'""'"' '^""- '■ '■ ^^"-'° ^'1-^-' Wau'fl^cl:. 



Stem 1 - 6 feet high (in sterile sandy soils often only 4 - 6 inches, in which state it is E 



pusrllum, NuttO. usually very haiiy. Leaves 2 - 4 inches long and 1 - 4 lines w de t n riS 



Xlti;,!:" '■' '''''"' ' ""'^ '-''■ ^^^^ -'y—^ andLrro^.^thema 



na,^'.".'! V T^ 7"'" ^T^' ' ""^ '°"""°"- ^"'y - ^'''''''- '^'- --J J^as long been 

 naturalized in Europe It ,s sometimes employed as a domestic medicine, being consider d 

 tome asmngent and diuretic (See Wood ^ Backers U. S. D.pens. appnd. «.'l085 £ 

 pu«//KOTof>,„iiall is only a dwarf stale of the plant. • />. 1U8&;. L. 



[Flora.] 45 



