#Xanthoria calcicola

[lichenaday]

Xanthoria calcicola

This foliose lichen grows on calcareous rock and stone work (and occasionally dusty trees) in eutrophic, well-lit, mild-temperate and costal regions of Europe and the Mediterranean. It has a yellow-orange to dark orange foliose thallus forming pleated lobes growing in large rosettes up to 20 cm in diameter. The center of the rosettes are covered in knobbly warts and granular isidia, and it only rarely produces apothecia. The presence of these isidia and the lack of apothecia is the best way to distinguish this lichen from the very similar looking X. parietina which is a lot more common and often grows on bark.

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[blogbirdfeather]

Xanthoria (calcicola?)

Cascais/Portugal (21/11/2023)

[Nikon D850; AF 105mm Micro-Nikkor F2,8 with Circular Flash Nissin MF 18; 1/250s; F18; 400 ISO]

#lichens #foliose lichens #lichen photography #xanthoria