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Genus Gerardia
- genus of annual or perennial herbs with showy pink or purple or yellow flowers; plants often assigned to genera Aureolaria or Agalinis
Genus Agalinis
- semiparasitic herb with purple or white or pink flowers; grows in the United States and West Indies
Genus Linaria
- genus of herbs and subshrubs having showy flowers: spurred snapdragon
Genus Penstemon
- large genus of subshrubs or herbs having showy blue or purple or red or yellow or white flowers; mostly western North America
Genus Verbascum
- genus of coarse herbs and subshrubs mostly with woolly leaves
Genus Veronica
- widespread genus of herbs with pink or white or blue or purple flowers: speedwell
Genus Solanum
- type genus of the Solanaceae: nightshade; potato; eggplant; bittersweet
Genus Browallia
- small genus of tropical South American annuals
Genus Brunfelsia
- genus of tropical American shrubs grown for their flowers followed by fleshy berrylike fruits