EXPERIMENT STATION BULLETINS. 



303 



Fig. 42 (42). 



Broad-leaved or Bitter Dock. Rumex obtusifolia L. A. smooth perennial, with a 

 deep tap root; stem simple, stout, erect, 60-120 high; lower leaves heart-shaped, oblong- 

 lanceolate, the upper narrower, the margins only slightly wavy: flowers loosely 

 whorled, valves (part of calyx) ovate-hastate, uith some teeth on the sides near the 

 base, the larger tubercle ovoid-eUiptical, the other two rudimentary; achene dark red, 

 smooth, shining. Fields and roadsides, less common than R. crispus. Introduced 

 from Europe and widely distributed. 



