W42 



HOOKER BALSAMROOT 



Balsamorhi'za hoo'keri, syn. B. balsamorhi' za * 



Flower heads sunflowerlike, solitary 

 at ends of usually leafless flower 

 stalks 



Outside (ray) flowers of head yellow, 

 conspicuous, female (pistillate), seed- 

 producing 



Bracts in a series (involucre) around 

 base of flower head, leaflike in texture, 

 lance-shaped to lance-egg-shaped, over- 

 Japping, usually in about 3 rows 



Center (disk) flowers of head num- 

 erous, small, golden yellow, perfect, 

 seed-producing, each accompanied by a 

 lance-shaped, chaffy bract 



"Seeds" (achenes) hairless, angled, 

 thickened, without bristles or scales 

 (pappus) 



Leaves mostlv basal, lance-shaped to 

 oblong in outline, green, soft, silky- 

 hairy, deeply cut to the midrib; lobes 

 often variously cleft or divided 



Taproot much thickened, with a bal- 

 samlike resin 



\Balsamorhiza balsamorhiza (Hook.) Heller is the oldest combination under Balsamo- 

 otdest name 11 ! ^hookeri jif'tt* 5 & dupllcating Din <> mi al. is now rejected for the next 



