Dalea candida var. candida
Family: Fabaceae
slender white prairie-clover, white prairie-clover
Dalea candida var. candida image
from USDA Plants website  
Dalea candida var. candida image
Bell Museum  
Etymology: Dalea: named after Samuel Dale (1659-1739), an English physician, botanist and botanical collector, and gardener who was the author of several botanical works and a treatise on medicinal plants. He was an associate of several major botanical figures in England,
Plants: perennial forb
Conservation Status: Native