Irish lichens

Placynthiella icmalea

Order: Agyriales       Family: Trapeliaceae

Species: Placynthiella icmalea

Growth type crustose
Photos: On rotting fence, Nadd Bog, Co. Cork, SW Ireland.
Identification confirmed by John Douglass

Thallus of very small brown to greyish-brown, isidiate or minutely coralloid granules. Often sterile but when present apothecia are scattered, the discs brown with persistent margins. Spores are simple, 8-12 x 4-5 Ám.
Chemical results: C+ red, KC+ red (best seen under microscope)

Common on peaty soils, dead wood, tree stumps and damp fence posts


Placynthiella icmalea


Placynthiella icmalea
Placynthiella icmalea. April 2012

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