Description: Thallus is calcareous, articulated, purplish/grayish-pink, reaching 7 cm (3 in) tall from a calcareous crust. Branching is irregular with occasional dichotomies; segments are cylindrical, 2-4 mm (0.08-0.16 in) long and 1-1.5 mm (0.04-0.06 in) diameter. Reproductive conceptacles occur laterally on axial segments; only male conceptacles sometimes occur at branch tips. Habitat: This species is commonly found in mid intertidal pools, the low intertidal and subtidal zones from semi-protected to semi-exposed habitats. Similar taxa: Calliarthron tuberculosum, Corallina spp.