Petractis nodispora Incertae sedis
Neopetractis nodispora (Petractis nodispora)

BLS conservation evaluation: DD NR. Identification confirmed by Alan Orange
Chemical results negative. Photobiont Trentepohlia

First described in 2009. Rare, on limestone and mortared walls with scattered records from Wales and the south and south-west of England

Endolithic pale pink thallus with immersed apothecia, their margins flat or slightly raised and sometimes hard to distinguish from surrounding thallus. Pale pink sunken discs, spores 3-septate with oil droplets, 165-25 55-75 m. Numerous pycnidia (visible as small black dots) present on fertile and sterile thalli, conidia in clusters of 5-15+ cells. Micrographs below.

Similar: Gyalecta hypoleuca (Petractis hypoleuca) and Ramonia calcicola


Petractis nodispora

Petractis nodispora

Microscope photographs
Petractis nodispora

Petractis nodispora

Petractis nodispora
Neopetractis nodispora (Petractis nodispora)
Wareham, Dorset. December 2016

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