SUNFLOWER FAMILY 425 
often loosely white-hairy. Long-petiolate, cordate, basal leaves commonly produced on separate 
short shoots; cauline leaves mostly 2-4 pairs, the lower obviously the larger, iis Bre, with 
ply 4+ and 3-9 cm. wide, 
more or less te blade ( ee ees dee sh: commonly 4-12 cm. lon 
entire or more often to othe s l- roots At up to 7 broadly tu paar! to lanceuhinlate: 
involucre Torey 13-20 mm Sigh sparse ty 6 co pina agin with fone: i Rap rie rahe 
especially toward the base and generally glandular as well; s 1.5-3 cm. long, mo 0-15, o 
rarely wanting in individual p eee achenes mostly andtorialy: shore bigiry | or a he fe both) : 
pappus white or whitish, barbellat 
Mostly in woodlands, from the Fa mi to moderate or sometimes rather high elevations in the mountains 
(where . pumece into the var. pumila), Arid Transition Zone to Canadian Zone; Alaska and Yukon to geome 
Dakota rthern New Mexico, ce To Tuan ge ane California to the southern end of the Sierra Nevada re 
west of th th 33 ascade summits in Ore ashington; also in northern Michigan. Type aiily “Alpine 
woods of the Rocky Mountains, on the os fey aie ” pre —June (Sept.). 
tmnica cordifolia var. pumila (Rydb.) Maguire, Madrofio 6: aor 1942. (A. tig oe Mem. 
Bot. Gard. 1: 433. 1900; A. humilis Rydb. N. Amer. Fl. 34: 341. 1927; A. cordifolia r. humilis Magui 
Amer. Mid]. Nat, 37: 138. A dwarf ecotype mostly less than 2 pik ‘tall with amet more often utite, 
only slightly or ie cordate leaves commo nly 2—5 cm. long, with more glandular achenes, and often with 
less panty re ee. sagt aloe re. ee and aakatolak eerone nearly or quite throughout the range of the 
oo. om in a where is mostly replaced by A. nevadensis (quod vide). Type locality: Gray’s 
ea olor 
5729. Arnica cern 5731. Arnica nevadensis 
5730. Arnica ‘encase 5732. Arnica cordifolia 
