Porina ginzbergeri Porinaceae
Porina ginzbergeri

Growth type crustose. BLS conservation evaluation: DD NR
Chemical results negative. Involucrellum violet, K+ blue-grey

Rare, a Mediterranean species recorded from a few locations in Britain and Ireland on shaded limestone and calcareous siliceous rocks

Thallus pale green-grey to orange-brown, very occasionally greyish black, immersed to superficial, then cracked. Perithecia quarter immersed to prominent, asci 8-spored, spores (19-)21.5-40(-45) x 4-7 Ám, (5-)7(-8) septate. Microscope photographs below.

Similar: Porina byssophila and P. linearis have 3-septate spores


Porina ginzbergeri

Porina ginzbergeri

Porina ginzbergeri

Microscope photographs
Porina ginzbergeri

Porina ginzbergeri
Porina ginzbergeri
On limestone. Portland, Dorset. February 2016

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