Rinodina sophodes Physciaceae
Rinodina sophodes

Growth type crustose. Chemical reactions negative.

Pioneer twig species often associated with Ash. Usually found near rough leaf and girdle scars on smooth-barked twigs. Widespread, but is most frequent in upland and exposed areas.

Small patches of pale grey to olive-brown thallus, usually with a dark prothallus. Apothecia are immersed but sometimes becoming sessile, the dark-brown to black discs with thick white margins. The spores are brown, 1-septate, 13-19 x 6-9 Ám. Microscope photograph below.

Similar: Rinodina roboris, on rough-barked deciduous trees. K+ yellow.
R. olea. On rock and man-made substrates, also on wood and bark


Rinodina sophodes

Microscope photograph
Rinodina sophodes
Rinodina sophodes
On Sycamore twig. Parkstone, Dorset. December 2012

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