Fig. 3From: Range extension and morphological characterization of rhodolith-forming species (Corallinales, Rhodophyta) from shallow water in the Mexican South Pacific Phymatolithon repandum. Vegetative morphology and anatomy (longitudinal sections: b–g). a Fructicose growth form. b Rounded epithallial cells (arrow) and subepithallial initials cells (double arrow). c Perithallial filaments with cell fusions between cells of adjacent filaments (arrow). d Multiporate tetrasporangial conceptacle with tetraspores (arrow). e Zonated tetrasporangium. f Pore canals (arrow). g Senescent conceptacle (arrow)Back to article page