This alga resembles a chunky pipe-cleaner, tapering at the tip. It has simple or irregularly branched alga with four subdivided branchlets (ramuli) arranged in close intervals along the main axis (easily seen in cross-section). Medium to dark green. Up to 40 cm long (thallus).
This alga is commonly found in rock pools and under canopies low on exposed rocky shores and can form sizeable beds. Tropical species of this genus are used for ornamental decoration in household aquariums.
Low intertidal rocks just below low tide level, attached to rock/stone or jetty piles, to depth of 42 m.
Photosynthetic - sunlight
Native to Australia
- DSE Advisory List : Not listed
- EPBC Act 1999 : Not listed
- IUCN Red List : Not listed