Frost-flower, Frost-wort: Long-branched Frost-weed: Canadian Rockrose. Helianthemum canadense. Rockrose Family. June - Aug. Found in sandy soil. New England to South Carolina, west to Wisconsin.
Of 2 kinds: the earlier ones solitary, about 1 inch across, yellow, 5 divisions; later ones small, clustered at the base of the leaves.
Lance-oblong, pale beneath, set close to the stem.