Cresponea premnea Roccellaceae
Cresponea premnea

Growth type crustose
Chemical reactions negative.

Occurs on dry, rough bark of mature Oak, Yew and Beech in old woodland and parks.
BLS conservation evaluation: LC Sc IR. NIEC 'Old woodland' indicator

Evanescent or thin, greyish-green thallus, the black apothecia are +/- green-pruinose. Pycnidia occasional. Asci 8-spored, the spores 5-septate, 18-25 x 5-7 Ám, usually curved and pointed. Micro photos below.

Sometimes found with Lecanographa lyncea


Cresponea premnea


Cresponea premnea

Microscope photographs
Cresponea premnea


Cresponea premnea
Cresponea premnea
On old Oak. Upton Park and Pamphill Green, Dorset. December 2012 2015

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