Monday, June 23, 2014
White Birds-In-A-Nest - Macbridea alba
White birds-in-a-nest is a member of the mint family. Few native mints are truly pure white, and this species stands out among the understory because of the way it glistens in the sun. Its common name is easily understood by looking at the third photo above. Flowers open atop the 18-inch stem in June and July. As they open, the winged blooms encircle the unopened white egg-shaped flower buds.
This is a perennial. I do not know if it persists overwinter as basal leaves or if it dies back to the ground; none of the published resources I have consulted describe this feature. Regardless, it is not a very interesting foliage plant. White-birds-in-a-nest reaches a mature height of 12-18 inches and rather succulent elliptical leaves line the stems, opposite each other, and with rough teeth at the outer margin. The plants can be solitary or in small clusters.
White-birds-in-a-nest is threatened by modern forestry practices and by changing hydrology. It is not a good candidate for home horticulture because of its habitat specificity, but it is relatively well protected at this time in the State Forest where its well being is closely monitored.