DESCRIPTIVE MANUAL 



175 



Fig. 98-B. Rocky Mountain Bee-plant (Cleome serrulata), 

 (Drawing by Charlotte M. King.) 



ROSACEAE, ROSE FAMILY. 



This family contains the well known rose, apple, pear, quince, 

 plum, peach, almond, strawberry, blackberry, raspberry, spiraea, 

 etc. 



Cinquefoil, False Strawberry (Potentilla monspeliensis L.). 



Description. — A hairy annual or winter annual from 1-21/2 ft. 

 high; leaves 3-foliolate, leaflets obovate to oblanceolate, the upper- 

 most toothed, nearly the whole length ; flowers in close cymes, calyx 

 large, 5-cleft with 5 bractlets ; petals 5, yellow, small ; stamens 15-20 j, 

 style terminal ; trichomes simple, long pointed, thick walled. 



Distribution. — Naturalized from Europe; eastern Canada, New 

 England, to Kansas ; common in Iowa, in Story, Boone, Polk, Clin- 

 ton, Lyon, Carroll, Woodbury, Kossuth, Webster, Marshall, Cerro 

 Gordo, Worth, Winnebago, Allamakee and other counties. 



Extermination. — Frequently introduced with clover seed. Sow 

 only clean clover seed in a clean field. Cut the weed off below the 

 surface of the ground and give thorough cultivation. 



