This section is from the book "Harper's Guide To Wild Flowers", by Caroline A. Creevey. Also available from Amazon: Harper's Guide To Wild Flowers.
Color, white, pale blue, or pink. Leaves, heart-shape, 3 - lobed, petioled. Flowers, 1 to 3 on long peduncles. Calyx, very hairy. July to October.
Like the well-known morning glory of our gardens, this species naturalized from Southern countries opens its flowers in the early morning, closing them before ten o'clock.
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