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.
Color, pink, sometimes white. The tubular corolla has a darker center. Leaves, very narrow, thin, fascicled, smaller ones clustered in the axils, irregularly arranged on the short branches which are 2 to 6 inches long. Low plants growing in tufts and mats, clinging to the ground. April to June.
This is often cultivated, and formerly was a favorite flower for massing in beds. It has a wild range from southern New York to Florida, climbing up rocky hillsides or covering rocks and sandy banks. (See illustration, p. 286.)
Moss Or Ground Pink (Phlox subulata)