Elachista fucicola (Velley) Areschoug
Description: Thallus a loose, globose cushion
to 14 mm wide from which a tuft of free assimilatory filaments
arises. Assimilatory filaments unbranched, usually more than 100
µm wide and10 –20 mm long, coalescing basally
together with paraphysis-like filaments into a loose cushion;
cortex and medulla present in the cushion. Many discoid
chloroplasts in each cell. Unilocular sporangia sunken in the
cushion; plurilocular sporangia unknown.
Habitat: mid to lower intertidal and shallow
subtidal; epiphytic on Fucus species, including
F. vesiculosus
(above). Widely distributed in Ireland and Britain; common.
Species list

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