Buellia stellulata Physciaceae
Buellia stellulata

Growth type crustose
Chemical results: K+ persistent yellow, C-, P+/- yellow, UV-
Identification uncertain, needs confirming

Usually on siliceous coastal rocks and pebbles. Often found with B. ocellata

The small patches of pale greyish, cracked thallus with a black prothallus often form mosaics. Apothecia to 0.4mm form between areoles, initially immersed. Asci are 8-spored, spores brown, 1-septate, 8-15 x 5-8 Ám.

Similar: Buellia aethalea. K+ yellow going red.


Buellia stellulata
Buellia stellulata
On ironstone. Studland, Dorset. April 2013

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