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WordReference Random House Unabridged Dictionary of American English © 2024blue′ stem′, [Plant Pathol.]- Plant Diseasesa disease of raspberries and blackberries, characterized by blue discoloration of the stem, wilting, and discoloration and decay of the roots, caused by a fungus, Verticillium alboatrum.
blue•stem (blo̅o̅′stem′),USA pronunciation n. - Plant Biologyany of several prairie grasses of the genus Andropogon, having bluish leaf sheaths, now grown in the western U.S. for forage.
- Plant BiologySee dwarf palmetto.
- blue + stem1 1850–55, American.
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