144 NEW YORK STATE MUSEUM 



Rabbit-foot, Old Field, or Stone Clover 

 Trifolium arvense Linnaeus 



Plate mSa 



An erect, usually much -branched annual, 5 to 18 inches high, silky- 

 pubescent. Leaves very short petioled, three-foliate, oblanceolate or 

 linear, minutely toothed, blunt and sometimes notched at the apex, nar- 

 rowed at the base, one-half to 1 inch long. Flowers sessile in dense, ter- 

 minal, peduncled, oblong or cylindric heads, one-half to 1 inch long; calyx 

 very silky; corolla whitish, shorter than the elongated, slender, plumose 

 calyx lobes. Fruiting pod very small. 



In waste places, dry and sandy fields, roadsides etc., Quebec and 

 Ontario to South Carolina, Florida, Tennessee and Missouri. Naturalized 

 from Europe. Flowering from May to September. 



The only Clover native to New York is the Buffalo Clover 

 (Trifolium reflex u -m Linnaeus) , which occurs from the western 

 part of the State westward and southward. Our flora contains a large 

 number of introduced species of clovers and related plants. Among them 

 are the following: 



Yellow or Hop Clover Trifolium agrarium 



Low or Smaller Hop Clover " procumbens 



Crimson Clover " incarnatum 



Red or Meadow Clover " pratense 



Alsike or Alsatian Clover -. " hybridum 



White Clover " repens 



Alfalfa Medicago sativa 



Black or Hop Medic " lupulina 



White Sweet Clover Melilotus • alba 



Yellow Sweet Clover " officinalis 



Bird's-foot Trefoil Lotus corniculatus 



