blue' stem' Plant Pathol.
a 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•stemPronunciation: (blOO'stem"), [key]
any of several prairie grasses of the genus Andropogon,
having bluish leaf sheaths, now grown in the western U.S. for forage.
See dwarf palmetto.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.