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Images of British Lichens

Cresponea premnea (Ach.) Egea & Torrente

Thallus thin, effuse or immersed, grey or greenish grey; apothecia black, with a thick proper margin, disks initially often thinly grey-pruinose, flat, becoming convex. On mature trunks, especially of Oak (Quercus), predominantly in the south, generally in old woodland, rarely on shaded siliceous rocks.

Refs: Smith et al. (2009), 363; Purvis et al. (1992), 285 (as Lecanactis premnea); Dobson (2005), 156-7 (photo); Dobson (2011), 163 (photo).


Cresponea premnea
Cresponea premnea
On shaded trunk of Oak (Quercus), Ashton Court, Bristol, February 2013 (BLS meeting)

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© A.J. Silverside
Uploaded August 2013, updated January 2016