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, cream or yellowish white. Flowers, in loose, terminal, and axillary panicles, with leaves interspersed; 5 involucral scales surround the flower. Tall, 5 to 7 feet, heaves, with petioles, sometimes winged, variously divided, cut, or toothed, ovate, triangular, or heart-shaped, or 3 to 5-lobed, the divisions cleft. Late July or August to October.
Cool, moist, shady woods, Maine to Georgia westward to Tennessee.
 
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