purple nightshade(n = noun.plant) prairie berry, silver-leaved nettle, silver-leaved nightshade, silverleaf nightshade, solanum elaeagnifolium, trompillo, white horse nettle - weedy nightshade with silvery foliage and violet or blue or white flowers; roundish berry widely used to curdle milk; central United States to South America;
is a kind of nightshade

alpine enchanter's nightshade, ball nightshade, banded purple, bittersweet nightshade, black nightshade, climbing nightshade, common nightshade, deadly nightshade, early purple orchid, enchanter's nightshade, late purple aster, nightshade, order of the purple heart, poisonous nightshade, purple, purple amaranth, purple anise, purple apricot, purple avens, purple bacteria, purple beech, purple boneset, purple chinese houses, purple clematis, purple clover, purple cress, purple emperor, purple finch, purple fringeless orchid, purple fringeless orchis, purple gallinule, purple grackle, purple granadillo, purple ground cherry, purple heart, purple heather, purple loco, purple locoweed, purple loosestrife, purple martin, purple milk vetch, purple mullein, purple onion, purple orchis, purple osier, purple passage, purple pea, purple poppy mallow, purple rock brake, purple sage, purple sanicle, purple saxifrage, purple silkweed, purple strawberry guava, purple trillium, purple velvet plant, purple virgin's bower, purple willow, red-spotted purple, reddish purple, retinal purple, royal purple, silver-leaved nightshade, silverleaf nightshade, stinking nightshade, texas purple spike, tyrian purple, visual purple, woody nightshade