70 ASTER ORDER 
GOLDWEED XIMENESIA ENCELIOIDES 
Plate 40, fig. 5 
The heads of the Goldweed have yellow centers and yellow, toothed 
rays, and they bloom all summer. The plants are 2-5 ft. tall and grow 
along roadsides and in fallow fields at 3000-7000 ft. 
ACTINELLA ACTINELLA RICHARDSONII 
Plate 40, fig. 6 
The yellow heads of Actinella are small and grouped in open clus- 
ters on stems 6 in.-2 ft. tall. They bloom in early and midsummer and 
are found on plains and foothills at 5000-8000 ft. This species of 
Actinella is sometimes called the “Colorado Rubber Plant,” but it does 
not produce rubber in sufficient quantities to be commercially valuable. 
DwARF SUNFLOWER HELIANTHELLA PARRYI 
Plate 40, fig. 7 
The heads of the Dwarf Sunflower are entirely yellow. They are 
borne on slender stems 1-3 ft. tall and bloom in midsummer. They 
may be found in spruce and aspen forests at 7000-10000 ft. 
BAHIA BAHIA DISSECTA 
Plate 41, fig. 1 
_ The heads of Bahia have large yellow centers and very short 
yellow rays. They grow on branching stems 1-4 ft. high and bloom 
in midsummer. The plants may be found on foothills and gravel- 
slides at 5000-9000 ft. 
ACTINELLA ~ ACTINELLA ACAULIS 
Plate 41, fig. 2 
Actinella, like Bahia, has large yellow centers and short yellow 
rays. The plants are unbranched and grow 6-18 in. tall. They bear 
