Con´cave. Having a rounded inwardly curved surface.
Concen´tric. With a common centre, as a series of rings, one within the other.
Con´nate. Growing together from the first.
Constric´ted. Contracted.
Contin´uous. Without interruption.
Convex. Elevated and regularly rounded.
Con´volute. Covered with irregularities on the surface, like the human brain.
Coria´ceous. Leathery in texture.
Cor´rugated. Wrinkled.
Corti´na. A veil of cobwebby texture. It gives the name to the genus Cortinarius.