42 
Colorado Experimeni Station 
Fig. 57.— Purple loco (Aragallus lambertii). 
silky hairs that lie closely against the leaf surface; often the leaves 
are smooth. The flowers (fig. 50) are scattered along th“ end of a 
leafless stem. This stem may be silky hairy or smooth. The- flowers 
are longer than broad. They are usually purple, but sometimes violet 
or white. The pod (fig. 47) is oblong, hairy, rather leathery and 
measures about 3^ to % of an inch long. 
Purple loco grows in dry open soil. Tt is not found in low, moist 
land, or to any extent in shaded situations. It is found throughout 
Colorado, from the lowest altitudes up to about 9,000 feet. In the 
mountains it is most prevalent in the onen pnrks, where it occurs in 
dry grassland. At the lower altitudes it is in bloom in early June. 
At 9,000 feet it comes into flower the latter part of June and the 
first of July. 
