ERIOGONUMS 



Erio'gonum spp. 



WTO 

 (2 leaves) 



Flowers small, with 6 petal-like outer flower 

 parts (calyx) but wthout petals, stalked, fe'w 

 to many in a cuplike structure (involucre) 



NODDING ERIOGONUM (E. cernuum) 



Flowers white or pink, hairless, borne in 

 nodding-stalked, bell-shaped, 5-lobed involucres 

 scattered along the repeatedly 2- or 3-forked 

 flowering branches; plant an annual 



BARESTEM ERIOGONUM (E. n 



Flowers usually white, sometimes rose or 

 yellow, in stalkless, erect, cylindric, 5-toothed 

 involucres clustered at ends or forks of flower- 

 ing branches; leaves all basal; plant perennial 



EEDROOT ERIOGONUM (E. Tacemosum) 



Flowers pink or white, in stalkless, erect, 

 tubular-bell-shaped, 5-toothed involucres scat- 

 tered (racemose) along the flowering branches; 

 each involucre with 3 scalelike, united bractlets 

 sheathing it 



Leaves basal, long-stalked, elliptic or oblong, 

 sometimes heart-shaped, densely woolly-hairy 

 (at least beneath); plant perennial 



WING EHIOGONUM (E. alatum) 



Flowers greenish or yellowish, in stalked, 

 hairy, top-shaped, erectly 5-toothed involucres 

 in small groups (cymes) borne in large, open, 

 branched clusters (panicles) 



"Seeds" (achenes) winged (alate), hairless, 

 up to about % in. "long 



Leaves mostly basal, tufted, somewhat spa- 

 tula-shaped, up to about .4. in. long, bristly- 

 hairy on upper surface and on midrib beneath; 

 plant perennial 



SULPHUR ERIOGONUM (E. ufnbellatum) 



Flowers sulphur yellow, with calyx narrowed 

 into a long, stalkhke base 



Involucres long-stalked, usually 3 to 9, top- 

 shaped, with 8 bent-back lobes, in an umbrella- 

 shaped cluster (simple umbel), with .a whorl 

 of small, linear or reverse-egg-shaped, leaflike 

 bracts at its base 



Stems erect, leafless, from a branching, woody 

 base; plant perennial 



