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, red, rarely white. This is a day species. Calyx, at first tubular, becomes swollen and round in fruit. Petals, 2-cleft. Leaves, below, with long petioles, broad at apex, but pointed, 2 to 3 inches long; those on stem sessile, rather wide, all with the petioles very hairy and sticky. Flowers, in panicled cymes, opening in the morning.
Found in cultivated ground or in waste places in New England and the Middle States. Not common enough to be called a weed, yet following the cultivator.
 
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