Dunch-nettle, the dead nettle, lamium.
"Poems of Rural Life in the Dorset Dialect"
William Barnes
Its name lamium is got from the Greek laimos, the throat, because of the shape of its corollae.
"Herbal Simples Approved for Modern Uses of Cure"
William Thomas Fernie
The Red Nettle, another lamium, is also called Archangel, because it blossoms on St. Michael's day, May 8th.
"Herbal Simples Approved for Modern Uses of Cure"
William Thomas Fernie