The overall form of the central
axial structure within a corallite (calical surface)
|spongy||Columella formed by inter mingling of loose trabeculae from the inner septal margins|
|lamellar||Columella formed by a plate, commonly free in its upper part|
|papillose||Columella formed by a group of twisted vertical ribbons or rods similar to pali or paliform lobes|
|feeble||Columella weakly developed|
Last updated on June 25, 2003-eek.