Page No. 



35b. Leaves broadly cuneate or fan- 

 shaped, 3- to 5-toothed or cleft 

 (upper leaves may be entire), not 

 viscid; heads arranged in narrow 

 racemose panicles; disc flowers 5 

 to 11 per head; corollas 3 to 4 mm 

 long; involucral bracts canescent; 

 plant usually lighter in color than 

 above; distribution similar to .4. 

 nova but offset to the northwest, 

 usually found at somewhat higher 

 elevations in more moist habitats 



than A. nova A. arbusaula 6 



(low sagebrush) 



30b. Plants usually over 5 dm high (39b and 42b provide most 

 exceptions to 5 dm height). 



36a. Leaves silvery-canescent , linear to linear- 



oblanceolate, mostly entire (occasionally with 

 a few irregular teeth) , or leaves deeply divided 

 into 3 or more linear or linear-oblanceolate 

 lobes . 



37a. Leaves entire or occasionally with 1 or 2 



irregular teeth or lobes A. aana 10 



(silver sagebrush) 



38a. Leaves 2 to 8 cm long, 1 to 10 mm 



wide, densely silky-canescent ; heads 

 arranges into dense leafy panicles; 

 occurs mostly east of the Continental 

 Divide from southern Canada to 



northern Colorado A. aana 



ssp. oana 12 

 (silver sagebrush) 



38b. Leaves smaller than above (up to 7 cm 

 long, 1 to 5 mm wide) and often crowd- 

 ed into dark-green clusters; heads 

 arranged into dense, short raceme or 

 spikelike inflorescences; occurs 

 mostly west of the Continential 

 Divide from southwestern corner of 

 Montana to Arizona and New Mexico 



A. aana 



ssp. viscidula 12 

 (mountain silver sagebrush) 



37b. Leaves typically deeply divided into 3 

 linear or narrowly lanceolate lobes 



which in turn may be 3-cleft 



A. tripartita 34 



(threetip sagebrush) 



80 



