Verbena gracilis
Family: Verbena or Vervain (Verbenaceae)
Size: 0.5 in. in clusters to 1.5 in. wide
Date: 8/21/2001
Other names:
Notes: Leaves bipinately cleft, very thin. 19 species of Verbena in Arizona, difficult to identify.
Fort Huachuca Vervain plant profile on the USDA Plants server.