Geographical distribution and floristic significance of Pyrola in China

This study presents comprehensive data on the geographical distribution of the genus Pyrola across China, gathered through extensive literature review and specimen analysis. Results showed that: (1) Pyrola is ubiquitously distributed throughout all Chinese provinces, with Jilin and Sichuan recording the highest species counts, each hosting 10 species. (2) The Pyrola genus exhibits a predominant north temperate distribution type, but at the species level, the Chinese endemic distribution type is most common. (3) The altitudinal range of Pyrola spans from sea level to 4 100 m, primarily between 1 500–2 500 m. (4) There is a significant overlap between Pyrola distribution areas and coniferous forests in China, predominantly within boreal coniferous forests, indicating their significance for vegetation restoration.