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Any of about 250 species of tropical or temperate, mostly herbaceous, plants that make up the genus Heliotropium, in the borage family, found throughout the world. Included are many weedy species. The best known is garden heliotrope (H. arborescens), a shrubby perennial that bears fragrant, purple to white, flat-clustered, five-lobed flowers in coiled sprays, similar to forget-me-nots.
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