The driest nastiest soil known to man was left after the blacktop was scraped off the site. The Rabbit-foot Clover was one of the few plants that looked really happy. This flower makes nice dried arrangements. The soft, fuzzy pinkish greyish flowers are on silky-hairy stems.
Clovers are hairy stemmed to prevent ants from easily climbing the stems.
Tri folium refers to the 3 leaflets that make up a clover's compaund leaf. A good identification book, like The Audubon Society Fieldguide to North American Wildflowers will help. Check out the library. Peterson guides are good too.