COMPOSITiE. (composite FAMILY.) 173 



c. Stems leaf I/, mostli/ branched above and bearing few or several heads: pubes- 

 cence not cinereous nor spreading/, either stritjose or none : pajipus simple. 



22. E. decumbens, Nutt. Sleiulcr. cuimnonly low or spreading, 6 to 

 18 inches high, strigulose-pubesceut or puhernlent, or ghil)nite : lejives linear 

 or sometimes liuear-spatulate (radical not rarely 4 to G inches long and onlv 

 a line or two wide) : involucre minutely hirsute or puliescent : rav8 If) to 40, 

 white, purplish, or violet-tinged. — Mountains, from Montana and Utah to 

 Oregon and California. 



* * * Perennial b// stoloniform creeping rootstocks, or creeping leafij stems or 



stolons: rai/s veri/ uinitrrous (100 or more) and narroic : loir (froitnd forms. 



23. E. PhiladelphicUS, L. Soft hirsute, a foot or two high, spreading 

 by rosulate offsets borne on apex of stoloniform creeping rootstocks: stem striate- 

 angled, erect, corynibosely branching above and bearing several small heads: 

 leaves oblong, or lowest spatulate; upper cauline half-clasping, obtuse, sjHir- 

 inglji and coarsehf serrate or entire: peduncles thickened under the head : ra>is 

 pink, almost filiform: pappus simple. — Across the continent. 



24. E. flagellaris, Gray. More or less cinereous with appressed pufiescenre : 

 stems slender, dij/'aseli/ decumbent and fagelliform but leafy, some prostrate, 

 many at length rooting at the apex and proliferous: leaves small, entire ; radical 

 spatulate and petioled ; those of the branches becoming linear : solitary 

 peduncles 2 to 5 inches long: 7-ai/s ichite or purplish: jiapjius double. — PI. 

 Fendl. 69. From the Upper Platte to Colorado, New Mexico, and W. Texas. 



* * * * Mostlij cinereous-pubescent or strigose annuals, leafi/stemmed and verij 



branching, often diffusely : heads conspicuously radiate and mostly paniculate : 

 low grounds and plains. 

 •*- Akenes narrow, little compressed, ivith a broad and whitish truncate apex and a 

 simple capillary pappus: rays 40 to 70 : leaves always entire. 



25. E. Bellidiastrum, Nutt. Diffusely or loosely branched, a span or 

 two higli, cinereous-pubescent : leaves spatulate-linear or the lowest broader, 

 an inch or less long: heads paniculate, short-peduncled : rays light purple. — 

 Nebraska to New Mexico. 



-t- -t- Akenes compressed, 2-nerved: pappus double: inner often fragile or decidu- 

 ous : rays mostly more numerous : leaves sometimes toothed or lol>ed. 



26. E. divergens, Torr. & Gray. Diffusely branched and sjireading, a 

 foot or less high, cinereous-pubescent or hirsute : leaves linear-spatulate or the 

 upper linear and lowest broader and sometimes laciniately toothed or lolud: 

 heads 2 or .3 lines high : rays white or purplish, very numerous: involucre hir- 

 sute : inner pappus of rather scanty bristles; outer of short subulate scales. — 

 Fl. ii. 175. From Nel)raska to W. Texas and westward to the coast. 



27. E. StrigOSUS, Muhl. Pubescence appressed, of rn strigose: .ttrm errrt, 

 seldom over 2 feet higli, leafy, branched above, bearing cymose or paniculate 

 heads : leaves lanceolate and the upper entire ; lower from spatulatc-lanceoiafe 

 to oblong, of en serrate: rays mostly white, not excessively numerous nor very 

 narrow : involucre with few or no bristly hairs : outer pappus a short crown of dis- 

 tinct or partly united slender scales, persistent after the fragile inner pappus 

 has fallen. — From Canada to the Saskatchewan and Texas, and westward to 

 Oregon and California. 



