Epithallus

The epithallium or epithallus is the outer layer of a crustose coralline alga, which in some species is periodically shed to prevent organisms from attaching to and overgrowing the alga.[1]

  1. ^ Johnson, C.; Mann, K. (1986). "The crustose coralline alga, Phymatolithon Foslie, inhibits the overgrowth of seaweeds without relying on herbivores" (PDF). Journal of Experimental Marine Biology and Ecology. 96 (2): 127–146. doi:10.1016/0022-0981(86)90238-8.