Gastroclonium ovatum (Hudson) Papenfuss
Description: Cylindrical cartilaginous fronds, brownish red to pale olive-green (in sunny habitats), to 250 mm high. Main axis not constricted,
solid, irregularly dichotomously branched, ends of brachlets with soft, crowded, ovoid ramuli, themselves occasionally bearing ramuli and filled with a watery
mucilage. Attached by branched stoloniferous growths that persis for many years.
Habitat: On rocks and stones in pools, lower intertidal and shallow subtidal, common, widely distributed.
Note: the terminal hollow parts degenerate after reproduction, and, in Ireland at least, are generally not apparent on plants from Jun onwards.