( Liagora distenta )

/ / Marine Flora


Liagora distenta has a cylindrical, filamentous dichotomous thallus, with a clusters of lateral ramifications; the surface is strong, flexible and calcified (1; 2). The alga can reach a height of 150-200mm; the colouration is white and green, the edges can be reddish (1).

There are approximately 64 species within the genus Liagora (3); L. distenta has a similar appearance to L. viscid, which is finer in texture (1). None of the species of the genus are listed under the IUCN Redlist (4).


L. distenta occurs in well-lit, sheltered conditions on slightly sloped rocky substrates to 15m (1).

Life Cycle

L. distenta is perennial (spring and summer); the macroscopic thalli are the gametophytes: the sporophytes are very small and filamentous (1).


L. distenta is found within the north-east Atlantic and the Mediterranean (1).


L. distenta uses photosynthesis, as well as requiring various inorganic nutrients, such as carbon dioxide, phosphorus and fixed nitrogen (2).

Conservation Status

Not listed under the IUCN Redlist (4).


Description written by Ben Harvey (2009)

(1)   Cabioc’H, J., Floc’H, J. & Le Toquin, A., 1992. Guide mes algues des mers d’Europe. Paris: Delachaux et Niestle.

(2)   Graham, L.E. & Wilcox, L.W., 2000. Algae. New Jersey: Prentice-Hall Inc.

(3)   Guiry, M.D. (2009). Liagora J.V. Lamouroux, 1812. In: Guiry, M.D. & Guiry, G.M. (2009). AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. Accessed through the World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=144211 on 2009-09-02

(4)   IUCN, 2009. IUCN Red List of Threatened Species. [Online] (2009.1) Available at: www.iucnredlist.org [Accessed 01 September 2009].