Sticta canariensis

Sticta canariensis is a species of cyanolichen in the family Peltigeraceae. It is known for its ability to form photosymbiodemes – distinct morphological forms resulting from symbioses with either green algae or cyanobacteria. The species exhibits two main forms: a bright green chloromorph with dichotomously branched lobes and brown fruiting bodies, and a dark blue-grey cyanomorph with phyllidia and white mottling. It has a disjunct distribution across Atlantic Europe and Macaronesia, where it primarily grows as an epiphyte in laurisilva forests but can also be found on soil and rocks near water sources. While historically confused with similar species worldwide, molecular studies have shown that true S. canariensis is restricted to western Europe and Macaronesia. The species is considered rare throughout its range, with the chloromorph form being particularly uncommon....read more on Wikipedia.