Belonia nidarosiensis Gyalectaceae
Belonia nidarosiensis

Growth type crustose
Thallus: chemical reactions negative. Hymenium I+ blue > red-brown

Often over-looked on mortar and limestone on dry, shaded, vertical surfaces sheltered from direct rainfall. Favours north and east church walls.

Thin, finely powdery-granular, pinkish-orange or reddish thallus. Apothecia rare, orange-red, widely scattered in thalline warts. Spores muriform tapering to thin tail.
Can be very difficult to separate from free-living Trentepohlia (algae)

Similar: Opegrapha gyrocarpa. On siliceous rocks, soralia C+ red


Belonia nidarosiensis


Belonia nidarosiensis

Trentepohlia (algae)
Trentepohlia (algae)
Belonia nidarosiensis
Lychett Matravers, Dorset. January 2014

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