Polysiphonia elongata

Systematics :

Kingdom: Plantae
Phylum: Red algae (Rhodophyta)
Class: Red algae (Rhodophyceae)
Subclass: Florideophycidae
Order: Ceramiales
Family: Rhodomelaceae
Genus: Polysiphonia
Species: Polysiphonia elongata

Norwegian name: Stilkdokke