Rinodina roboris Physciaceae
Rinodina roboris

Growth type crustose
Chemical results: K+ yellow

On rough, well-lit bark of Oak, Ash and Beech. Can be locally common in parts of southern Britain.

Thick pale grey or grey-green thallus, often irregularly cracked. Apothecia with thick margins, the discs dark brown to black. Spores brown, 1-septate, 14-22 x 8-12 Ám with rounded locules. Microscope photograph below.

Similar: Rinodina sophodes. Usually found on twigs and branches of smooth-barked trees, K-


Rinodina roboris


Rinodina roboris

Microscope photograph
Rinodina roboris
Rinodina roboris
On old Oak. Holton Lee, Dorset. October 2012

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