This section is from the book "A Manual Of Weeds", by Ada E. Georgia. Also available from Amazon: A Manual Of Weeds.
Introduced. Annual. Propagates by seeds. Time of bloom: June to August. Seed-time: July to September.
Range: Nova Scotia and Ontario to Michigan and Iowa, southward to Virginia. Habitat: Meadows, roadsides, and waste places.
Were there no larger and better Clovers, this plant could not be characterized as a weed; but, as it is, the places that it holds might be better occupied, and its seeds are a frequent impurity among those of its larger relatives. Stems smooth, slender, branching, usually erect, six to fifteen inches in height. Leaves light green, on petioles but little longer than the cohering, narrow, lance-shaped stipules; the leaflets all grow from the same point, and are sessile, about a half-inch in length, obovate or oblong, and edged with very minute teeth. Heads axillary on peduncles much longer than the leaves; they are small, oblong, rounded, densely crowded, golden yellow, the flowers having rather narrow, incurled standards and short, blunt keels; the corollas are persistent and each flower turns downward on the stalk as it is fertilized, finally becoming dry and brown, the withered heads resembling small dried hops. The pods are one-seeded. (Fig. 164.)
Prevent seed development and distribution by early and frequent cutting. Cultivate and reseed the ground with larger and better forage plants.
 
Continue to: