Oxneria ussuriensis

The lichen was formally described as a new species in 2014 by lichenologists Sergey Kondratyuk, Soon-Ok Oh, and Jae-Seoun Hur.

The type specimen was collected by the first author from a park in Kraskino (in the Khasansky District of Primorsky Krai), where he found it growing on a Populus tree.

[1] Oxneria ussuriensis has a deep orange to orange-yellow rosette-like thallus that has a diameter of 4–8 mm (0.16–0.31 in).

[1] The apothecia made by Oxneria ussuriensis are lecanorine in form with a diameter of 0.6–1.7 mm and a bright orange disc that is either flat or somewhat concave.

[1] Xanthomendoza huculica, found in Ukraine, is somewhat similar in appearance and morphology to Oxneria ussuriensis, but X. huculica has a larger thallus (up to 3 cm wide) made of larger lobes (2.5–7 mm long and 0.3–0.7 mm wide), and its spores have a smaller length range (10–17 μm) and are thinner (5–7 μm).