Fuscidea cyathoides Fuscideaceae
Fuscidea cyathoides

Growth type crustose
Chemical results: K+ dirty-yellow, C-, P+ red, UV-

Common on siliceous coastal and upland rocks.

Very variable, warm-brown or greyish, greenish-white in shade, smooth or rough, cracked or areolate. Surrounded by black prothallus which is often visible between the areoles. Sessile apothecia, convex dark-brown or black discs with paler margins.

Similar: Fuscidea kochiana and Fuscidea lygaea

Fuscidea cyathoides
Fuscidea cyathoides
On chert. Portland, Dorset. February 2016

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