Coccocarpia erythroxyli

Spore Ascus

Thin Section


Lichen Index

Coccocarpia erythroxyli thallus and apothecia.

Coccocarpia erythroxyli thallus and tomentum.

Apothecia are hemispherical granular domes adhering tightly to the cortex of the thallus. They progress from reddish-brown to brownish-black with age. Instead of green algae, this lichen forms a symbiotic partnership with a cyanobacteria (Scytonema).

The lower surface forms a thick, dense layer of black tomentum that frequently overlaps the margins of the lichen, sometimes greatly so. The upper surface of the thallus (cortex) is gray with a slight bluish tint.