Dichotomaria marginata


Thallus dark red-brown, often grey-red above, 4–15 cm high smooth surfaced.


Has not yet been assessed for the IUCN Red List.


Atlantic to Indo-Pacific.
Occurs on mangrove prop roots or rocks in shallow reef flats or tide pools up to 10 m depth.
Plants usually grew on reef rock at 1–16m depths or were intertidal.
Benthic; brackish.


Sexual thalli dioecious. Carpogonial branches 3-celled, borne in the young cortex, with the hypogynous cell cutting off four large-celled branches and the basal cell four branches of smaller cells. Gonimoblast filaments from the fertilized carpogonium curve towards the surface to form the cystocarp wall.


Prey / Predation

Special features