Definition of arrowleaf balsamroot
: a large, perennial composite herb (Balsamorhiza sagittata) native to the western U.S. and Canada that has heart-shaped to arrow-shaped leaves with velvety, grayish hairs and large, yellow-rayed flower heads resembling those of the sunflower On the uplands, clumps of arrowleaf balsamroot raise their golden heads into the (occasionally) blue sky, mixed with the deep blue of larkspur and the pure white of chickweed blossoms like tiny stars in a sea of green grass. — Stuart S. White, Great Falls (Montana) Tribune, 24 June 2010
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First Known Use of arrowleaf balsamroot
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