a grayish, hairy, eastern Asian shrub, Caryopteris incana, of the verbena family, having clusters of showy, blue or bluish-purple flowers.
blue spot Historical Examples Hans Brinker Mary Mapes Dodge Swatty Ellis Parker Butler Peck’s Uncle Ike and The Red Headed Boy George W. Peck Principles of Decorative Design Christopher Dresser Sunday-School Success Amos R. Wells America’s War for Humanity Thomas Herbert Russell Children of the Desert Louis Dodge Life in the Confederate Army Arthur Peronneau […]
a town in W Missouri.
a spruce, Picea pungens, of western North America, having bluish-green leaves, grown as an ornamental: the state tree of Colorado and Utah. noun a spruce tree, Picea pungens glauca, native to the Rocky Mountains of North America, having blue-green needle-like leaves Also called balsam spruce
a serious fungal disease of certain trees that reduces the economic value of the timber, caused by various species of the genus Ceratocystis. noun (forestry) a bluish discoloration of sapwood caused by growth of fungi