38 
Colorado Experiment Station 
48, pod of woolly loco: 49, diagram of pea flower, dissected; 50, side view of purple loco 
flower; 51, keel of woolly loco; note the blunt point; 52, keel of purple loco; note the 
sharp point. 
LUPINE, WILD BEAN, BLUE BEAN (Lupinus) 
Lupines are herbaceous plants. They have leaves with the di¬ 
visions all radiating from the end of the leaf-stalk (fig. 53). The 
flowers (fig. 54) are usually blue, and almost as broad as long. The 
pods are straight and usually much flattened. According to Ryd¬ 
berg’s “Flora of Colorado,” Bulletin 100, Colorado Agricultural Ex- 
