Callithamnion corymbosum
Systematics :
Kingdom: Plantae
Phylum: Red algae (Rhodophyta)
Class: Red algae (Rhodophyceae)
Subclass: Florideophycidae
Order: Ceramiales
Family: Ceramiaceae
Genus: Callithamnion
Species: Callithamnion corymbosum
Other names: gaffelgreina havpryd
Norwegian name: Gaffelgreinet havpryd