
ASTER FAMILY 69 
Bur Maricotp  BIDENS LEVIS 
Plate 40, fig. 1 
The bright yellow heads of the Bur Marigold may be found bloom- 
ing all summer in marshes and ditches at 3000-6000 ft. The plants are 
1-4 ft. tall. The names, both common and botanical, refer to the 
tooth-like spines on the end of the seed-like fruits. 
MouNTAIN ARNICA ARNICA CORDIFOLIA 
Plate 40, fig. 2 
This native Arnica is a close relative of Arnica montana, which fur- 
nishes the well-known tincture that is applied to bruises and sprains. 
It has been employed as a stimulant in low fevers, but does not appear 
to have any value when used internally. The Mountain Arnica occurs 
in fir, spruce and aspen forests at 7000-12000 ft. The heads are yel- 
low-centered and yellow-rayed, and bloom all summer on plants 1-2 ft. 
high. 
(GGAILLARDIA GAILLARDIA ARISTATA 
Plate 40, fig. 3 
Gaillardia bears very large heads with reddish-brown centers and 
many yellow or orange rays. They bloom all summer. The plants 
grow 1-3 ft. tall and may be found on prairies, and in meadows and 
aspen woodlands at 7000-10000 ft. The Gaillardias are frequently 
cultivated in gardens. 
BUTTERWEED SENECIO FENDLERI 
Plate 40, fig. 4 
The yellow heads of the Butterweed are quite small but are grouped 
in large clusters on stems 6 in.-2 ft. tall. They bloom in midsummer 
and are found on foothills and gravel-slides at 7000-10000 ft. 
