A genus of small flowering plants in the evening primrose family, native to North and Central America, with delicate white or yellow flowers.
Named after botanist William Bartram or Benjamin Smith Barton, using the Latinized -ia suffix common in botanical nomenclature for plant genera.
Bartonia flowers open only in bright light and close in shade—they're so sun-dependent that they're nearly invisible on cloudy days, making them a botanical treasure hunt in their native habitats.
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