Calogaya xanthoriella resembles a small rosette with short, flat lobes, yellow to greenish yellow in colour. Its apothecia are lecanorine or zeorine in form, with flat to concave orange discs covered with yellow pruina. Its ascospores, which number eight per ascus, are more or less ellipsoid in shape, measuring 9–14 by 4–7 μm.[2]
Habitat and distribution
In addition to the central Tian Shan Mountains of China, Calogaya xanthoriella has also been recorded from the mountains of continental Turkey. The lichen grows at altitude ranges between 900 and 2,050 m (2,950 and 6,730 ft). It has been found growing on the bark of Berberis, Lonicera, and Malus sieversii, as well as on weathered wood.[2] It is one of 12 Calogaya species included on a 2021 checklist of lichens in Xinjiang.[3]
