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, 16·5-25 × 5·5-7·5 µm. 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

Microscope photographs





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