To obtain high-quality occurrence records for wild apple across its whole distribution range, we compiled data from field surveys, herbariums and the literature. The field surveys were conducted in all of the countries with wild apple distribution in Central Asia. Precisely, we had several exhaustive investigations of wild apple populations in Xinjiang, China from 2008 to 2021, including distribution range and abundance of wild apple across its whole elevational ranges in six counties. For herbarium data, we combined the records from Global Biodiversity Information Facility and Chinese Virtual Herbarium. Finally, we obtained 8344 occurrence records for wild apple. 

We compiled data from field surveys, herbariums and the literature.