CQMP.OSITA^ (COMPOSITE FAMILY^ 



5S23 



.1. , . EAYS CONSPICUOUS (much surpa^ng the 



Leaves entire or merely toothed. 



Stems usually more than 3 dm. high, simple below, solij^i:^y 



IroBtttheiendS of distinct (sometimes branched) root-stocks. 



InvQluCFe with; spreading or reflexed bracts; rays rather 



broads pappu^ siniple. •^i.i.-i- >.. ' 



Involucre glabrous or glandular "C . . . i >i . 



Involucre woolly, or hirsute and viscidulous. 



.ujlpvplucrevecy woolly 



Inivplucre viscidulous and moderately hirsute 

 Invol^f^ witli mostly appressed bracts; rays numerous and 

 narrow;'pappus double". 

 Rather equably leafy, the upper stem leaves not greatly 

 reduced. 

 Leaves few, short, and distant, . ^broafily} , obovate to 



-, ovate or broadly oblong . > ' y ■' ^ 



Leayesmore numerous, oblanceolate to ovate and oblong, 

 Bracts glabrate, obscurely glandular. 

 , .Bi^acts more; pr less hirsute. 



Herbage neariy^of quite,. glabrous. 

 ., ).. ,-Herbage clearly pubescent . . 

 Quite ineqiiably leafy, t^e upper stem leaves greatly re- 

 duced in size. ■ , ,■ . . , ,/ , i 

 ., Pale green an4 apparently glabrate, but under a lens 

 minutely rougn7jiirsuJ,&,,. -.,,'.-.,. I , ', . ;. ,,.,,1. 

 Park green and distinctly pubescent, often visci(i,u|ous, 

 f-.ji,' , especially above . . . . . .' ' . 



Stems usually less than 3 dm. high (mostly 1-2 dm.), either 

 branched near the^baseior somewhatrcaespitosb. ' ' ' 

 Stems mostly sinaple and monocephalous. 



Stems ; leafy J)elow, either scapiform or with greatly ;r^. 

 duced leaves above; heads mostly soUtp.ry on the 

 : , : bracted or naked peduncle. .,'.,, 

 Leaves spatulate or oblanceolate to linear. 

 ,;i luYt^ucre wopjlly., - • , ■ , ^ 



' Wool of involucre blue-black; rays white 



' ';''*■! Wool of involucre mostly white; rays violet or 

 ' ■ ■ =- ' whitish . ;■.-.'. 



Involucre hispid pr min.^tely hirsute. 

 - Kays not yellpw. 

 ' ' ' Rays white;'' •■'''~y''^yi< 

 ■ I ' ; < ^acts hispid-cihate . . . # • . 

 I ^ , ^ Bracts app^jessed-hirsute , ., . ....... 



, 'K^iyB blue, violet, or purple. ' 



' ' '"'Hlspid-cilid^^thrdughou'e " . , .' \ 



; !" I '7 . Pubescencl^ not hi^id,. mostly short andj.ap- 



disk) 



1. !p^. salsuginosus 



(, , 



2. E. elf^tior. 



, 3. E. tJoulteri 



5. E. 



6. E. 



7. E. 



■ Rays violet .' ' .' 



• Rays pale purple . 



'-.} Rays S^eUo^ : . \ . '- , 



. p ]^«aves obovate. to short-oblong. 



' ' Plant green, and glabifate , 



' Plant pale-canescent . ' , 



Stems leafy throughout. 



■-i 



X^ves all brp^d, Qbqvate to sh(u:t-oblong ^ 

 Leaves narrowly lanceom.te to linear. 



InVolucre gla-brous' ■ bu^ ' pruindsfc^JglandiJar; foliage 



n> >^labrous or nearly. so . ,^. ! ■-. I. .m- . 



Involucre hirsute or pubescent., > . > , , . 

 Leaves glandular-scabrous and hirsute', 

 ^Leaves not glandular.' . ,- 1 ■ ; ■ 



. > . (R^s jiot yellowj I ,y., >, '■ - ... 

 , ftays pu^le or violet, i ■ , , 



Leaves subglabroua^ 

 PUnts low (4-10 ctn.); 'pubescence spread- 

 j ■! -.- ■ ing ■', , ■ .- i .■ . . * . , .;.,'*. 



*lant3 .taller (8-16 cm.); pubescence iap- 



Leaves hispid-hirsute . . -• . '> i 

 Rays ■whatej n , i ■ , , , 

 , Bracts, Jiispid-ciliate .... 



, . jBracts appressed-hir'sute 



Eaj^s yellow ' . . ' . . . ; 

 ^teixius more or less' branched and with few-several heads. 

 Rays ^W^iilie. , ,,. ■ , . , 



Leaves 1 -nerved. 

 ' H^bage Vhinutely hirsute. 

 ) 1 1 Bracts hispid-ciliate . , ,. . , , , , 



SV E. 



9.;,;e. 



10. E. 



11. E. 



19. E. 



20. E. 



supi^rbus. , , 

 niaqrantKus.. , 



speciQsus. > , 

 subtrineiris. 



asper. , 

 fori^osissiimus. 



melknbOephalus. 

 uniflorus. 



Engelmannii., , 

 Ji^^onii. 



21. E. poliospeiinus. 



18. E. 'iiUiiitis. 

 17.'E.mdibktus. . I ■ 



22. lE. luteus.rr "' , . , 



12. E. Garrettii. 



13. E. tener. 



14. E. nauseosus. 



15..E..leipmepis. 



16. E. glaiidulosus. 



17. :E.'rad}eatjt^.'>{ 



18: E. ursinus. 



21. E. poliflspermus. 



19. E. Engelmaiiiiiii 



20. E. Eatonii. ' ' 



22. E. luteus.' 



19. E. Eiigelraannii. 



