Blue Bottle
a two-winged fly, musca (lucilia) cæsar, the body of which has some faint resemblance to a bottle of blue glass. Also the centaurea cyanus, more fully named the corn blue bottle, from its being found chiefly in corn fields. It belongs to the order asteraceæ (composites), and the sub-order tubulifloræ. It is from 2 to 3 feet high with florets of the disk, which are small and purple, and those of the ray few, larger and bright blue. It is common in the United States and Europe.