I found a small colony of these plants in a shaded area lining a golf course. They are 6-12 inches tall, with mostly basal leaves plus a few bract-like leaves under the inflorescences. The flowers are in whorls around the stems and are white, each in tubular form and with 5 petals. The second photo is from the bottom side of a flower. These look a lot like Salvia lyrata, but those are usually done blooming here by early June. Ours also have pale lavender flowers that are much longer than those shown below, and the lyrate leaves that support the plant's name. Is this some kind of stunted, late-season S. lyrata specimen, or something else? All of the plants in that colony had the same appearance.