Lecanora praepostera Lecanoraceae
Lecanora praepostera

Growth type crustose
Chemical results: K+ yellow > red, C-, P+ orange-red, UV-

A coastal species found on +/- sheltered vertical, siliceous sea cliffs on south-west and western coasts

Areolate creamy-grey or pale creamy-greenish thallus with a zoned, bluish-tinged prothallus. Apothecia are in small groups or dispersed, discs pale brown or greyish-brown, becoming dark blackish-brown when old. Spores simple, 11-15 x 6-8 Ám.

Could be confused with Tephromela atra or Lecanora gangaleoides


Lecanora praepostera

Lecanora praepostera
Lecanora praepostera
On chert, Portland, Dorset. February 2016

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