16 CONTRIBUTIONS TO WESTERN BOTANY. 



the upper side of leaves, main peduiicles and bracts ; flowers about 

 J4-Iine long, yellow-hispid below, white with pink stripes, with 

 broadly ovate sepals. Reno, Nevada, in the Middle Temperate life 

 zone. Blooms in early summer. 

 E. Thomasii Watson is E. minutiflorum Watson. 



B. COmosum (Jones Cont. 7 719), E. reniforme var. comosuiu 

 Jones 1. c. 



E. comosum var. playanum. 



Involucres i,dandular-pubescent after the fashion of E. pusil- 

 lum. No. 5064 be Jones. Mica Spring, S. E. Nev., April 14, 1894. 

 Also on Darwin. Mesa, Cal.. April 28, 1897, Jones, Reno, Nev- 

 ada. Hillman. 

 E. angulosum var. gracillimumfli. & W. Bot. Cal. 2 480). E. 



tiracillimum B. i^' ^^ ■ 1- c. 



B. Arizonicum Stokes. 



Rescmblinjj: E. rotundifolium, but taller and more slender; 

 leaves round to rcniform : biennial, with a sparingly branched base. 

 Arizona In the Tropical life zone. 



E. sessile Stokes. 



Low plants, intricately branched at the crown into innumer- 

 able, short and racemosely compound, rather stout (for the plant) 

 divisions which are rarely over 6 lines long; the tern\inal invohi- 

 cr«.s seem to be on peduncles 2-4 iinc.> long; leaves obovate, dense- 

 ly woolly below; flowers few. about ^-^ lines long, much larger 

 than the involucres : sepals broadly oblong and smooth, spreahng ; 

 involucres alx)Ut one-third line long, campanulate, deeply lobed. 

 Grows at Reno. Nevada, in the Lower Temperate life zone. 

 Blooms in summer. 



E. Baileyi var. Davidson! (Greene. ) 



This is a more robust form than the type, with flowers and 



