Lineolaria flexuosa Bale, 1884

Hydrorhiza flattened, adherent to substrate, with a small peripheral flange.

Hydrothecae usually alternate and set at an acute angle to the stolon or parallel with it, connected to the stolonal canal through a wide orifice. Hydrotheca rectangular to saccate, widest about the middle, adnate to substrate for most o f length, turning sharply upwards in the distal fifth. Margin delicate, circular to elliptical, with a pair of lateral lobes, aperture of immature hydrotheca closed by a delicate membranous flap.

Colonies dioecious, gonotheca large, situated beside a hydrotheca, male and female similar in shape and size, irregularly ovate, strongly flattened and adnate to the substrate by a wide peripheral flange, aperture distal, circular to subcircular, with thickened rim, the surface with small chitinous spines.

Colour: In life, colonies yellow or white, gonophores cream-coloured.