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.
H. canadense produces larger flowers than either of the last, in corymbs, with leafy, hairy stems, 8 inches to 4 feet high. Leaves, toothed below the middle, acute, the upper rounded or heart-shaped at base, sessile or clasping, those below more oval or lance-shaped. July to September.
Open woods or along wood paths, Newfoundland to New Jersey and westward.
 
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