Also called Purple or Red Dead-Nettle, these little flowers are in full bloom right now in the middle of April. These tiny flowers pop up in lawns and along the edges of sidewalks. If they were larger or rarer, they would be garden treasures; their success makes them unappreciated. These pictures were taken in Beechview on April 12 and 14.
For a fuller description, see the Lamium purpureum reference page.