CORONA, among botanists, the name given by some to the circumference or margin of a radiated compound flower. It corresponds to the radius of Linnaeus, and is exemplified in the flat, tongue-shaped petals which occupy the margin of the daisy or sunflower.
CORONA AUSTRALIS or MERIDIONALIS, Southern Crown, a constellation of the southern hemisphere, the stars of which in Ptolemy's catalogue are thirteen, and in the British catalogue twelve.