Specimen growing on a dead fruit (apple?) tree. Some of its features:
- Thallus whitish-greyish, cracked, crowded of lirellae;
- Apothecia immersed with raised carbonaceous margins, multi-branched to star-shaped;
- Chemical reactions: C-, K+ yellow to red, KC+ red, P+ yellowish-orange;
- Base of exciple closed with margin continuing under disc;
- Asci almost cylindrical (measured two, with 88 × 8.2 µm and 91 × 11.5 µm) with several (8?) spores;
- Spores brown at maturity (colourless when young), several (variable) septate, with the following approximate average dimensions: 28.7 × 6.5 µm.
According to Irish lichens it must be Phaeographis dendritica. The similar P. smithii has the base of the exciple open.
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Created: 2012-07-26 11:56:40 PDT (-0700)
Last modified: 2012-07-26 11:56:42 PDT (-0700)
Viewed: 36 times, last viewed: 2017-06-13 07:23:59 PDT (-0700)