Porina chlorotica Porinaceae
Porina chlorotica

Growth type crustose
Chemical results negative. Involucrellum K- or K+ grey-brown

Most frequent on damp, shaded, siliceous rocks, rare on bricks. Occasional on smooth bark where it can be confused with Porina aenea

A thin dull brown, greenish or blackish thallus (which never appears oily). Small perithecia (to 0.3mm), the involucrellum purplish brown. Spores are 3-septate, (12.5-)14.5-18(-32) 3.5-4.5(-6) m. Micro photograph below.

Similar: P. byssophila. Involucrellum K+ bluish-grey, spores 3(-7) septate


Porina chlorotica


Porina chlorotica

Microscope photograph
Porina chlorotica
Porina chlorotica
Church Knowle and Canford Magna, Dorset. March 2014, February 2016

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