Campanularia diverticula  

Colony stolonal, hydrorhiza tubular, perisarc smooth and thick with close, fine, vertical internal striae.

Hydrothecal pedicels tubular, of variable length, given off more or less regularly, usually from same side of stolon; pedicel ending in a weak constriction below hydrotheca, sometimes 1 or 2 regeneration joints along length; perisarc thinner than on hydrorhiza. Hydrotheca large, deeply cylindrical to weakly bell-shaped, base rounded with transverse diaphragm with central hydropore, wall thickened below diaphragm, thinning above. Hydrotheca gracefully everted below circular margin, rim with 12–14 shallow crenulations sometimes finely replicated, usually six to eight faint pleats extending partially or completely down into hydrotheca from embayments between crenulations.

Hydranth large, with 20–24 tentacles.

Colour: Colourless (preserved specimens).