
ROSE FAMILY 41 
Gotp Cup, PoTENTILLA  POTENTILLA GRACILIS 
Plate 25, fig. 2 
The Potentillas may easily be mistaken for buttercups, though 
they actually belong to the Rose Family. The scientific name of the 
genus comes from a Latin word meaning powerful, and refers to the 
former use of the plants in medicine. This species, called Gold Cup 
on account of the shape and color of the blossom, is bright yellow 
with an orange spot at the base of each petal. The flowers grow on 
graceful stems 6 in.-3 ft. high and bloom in midsummer. The plants 
grow in meadows and open woodlands at 5000-10000 ft. 
GOLDEN AVENS  SIEVERSIA TURBINATA 
Plate 25, fig. 3 
The Golden Avens also looks like a buttercup with its cup-like, 
yellow flowers that bloom in midsummer. The plants grow 4-20 in. 
high and are found on the higher peaks at 10000-14000 ft. 
PINK. PLUMES SIEVERSIA CILIATA 
Plate 25, fig. 4 
The brilliant rose to purple coloring of this flower is found in the 
sepals, the petals being rather inconspicuous and cream-colored with 
rose veins. The nodding blossoms of Pink Plumes occur on graceful 
rose-colored stems 4-18 in. tall and bloom in early summer. They are 
found on hills at 8000-12000 ft. The fruits form feathery clusters 
after the petals have fallen 
CREAMY CINQUEFOIL DRYMOCALLIS ARGUTA 
Plate 25, fig. 6 
The flowers of the Creamy Cinquefoil vary from pale cream to a 
pure yellow. They grow on erect stems 6 in.-4 ft. tall and blossoms in 
early summer. They are widely distributed on prairies, plains, mea- 
dows and hillsides at 3000-12000 ft. 
