old-maid's bonnet


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Noun1.old-maid's bonnet - stout perennial of eastern and central North America having palmate leaves and showy racemose blue flowersold-maid's bonnet - stout perennial of eastern and central North America having palmate leaves and showy racemose blue flowers
genus Lupinus, Lupinus - herbs or shrubs: lupin
subshrub, suffrutex - low-growing woody shrub or perennial with woody base