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Micareaceae
Micarea denigrata Growth type crustose Chemical results: Usually K-, C +/- orange-red. Upper hymenium K+/- violet Pioneer species on worked timber, untreated fence posts and on rotting wood. Rare on bricks and sandstone rocks Variable. Thallus greenish-grey and areolate or just a scurfy grey-black crust. Abundant small grey-black to brownish apothecia with +/- indistinct margins. Often +/- sterile on worked timber but then with numerous white-tipped black pycnidia. Spores (0-)1 septate, usually +/- curved. Similar: Micarea nitschkeana has 3-septate spores. |
Micarea denigrata