TRIFOLIUM REPENS. 
NAT. CL ASS, DICOTYLEDONES; ORDER,— LEGUMINOSÆ. ART. CL ASS,— 
DIADELPHIA ; ORDER, — DECANDRIA. 
The Trifolium Repens is furnished with creeping stems, 
which extensively propagate it in ail directions, so that 
it is with difficulty eradicated from places where it is 
considered a troublesome weed. The leaves hâve long 
pétioles, with their limb trifoliate, each leaflet obcor- 
date, serrulate, and frequently furnished with a dark 
purplish blotch on the upper surface. The small 
papilionaceous flowers are grouped into umbellate, 
globose heads. The calyx tubular, with five sharp 
unequal teeth. The corolla has the large uppermost 
petal free, but the other four are more or less adhèrent 
by their claws; in other species of the genus the 
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