Small-flowered Skullcap, Small-flowering Narrow-leaved Skullcap: Scutellaria angustifolia ssp. micrantha -
Snapdragon Skullcap, Nose Skullcap: Scutellaria antirrhinoides -
Hooded Skullcap, Marsh Skullcap, Willow Weed Skullcap: Scutellaria galericulata (Synonym: Scutellaria epilobifolia) -
Blue Skullcap, Hoodwort, Madweed, Mad-dog Skullcap: Scutellaria lateriflora (Synonym: Scutellaria lateriflora var. lateriflora) -
Blue Skulcap: Scutellaria tuberosa -