This section is from the book "Harper's Guide To Wild Flowers", by Caroline A. Creevey. Also available from Amazon: Harper's Guide To Wild Flowers.
Family, Pulse. Color, at first purplish, then a soft gray. Flowers, in compact, roundish heads, silky and downy. Stipules present. With persistent, strong roots, it may become a troublesome weed in lawns.
In the fields, its soft, purplish gray bloom varies with a pleasing tint the greens and browns of grasses. 5 to 10 inches high. In dry, poor soil, common.
 
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