A comprehensive checklist of the deciduous photinia genus (Maleae, Rosaceae), with emphasis on their validity and typification.

Due to the complicated evolutionary history in , ninety-seven taxa have been described since 1784, and ninety-one of them are validly published taxa, five are naked names, and one is an invalid name. After a comprehensive and critical evaluation, 213 names have been published, including new combinations, new status, and new names; this may be due to the controversial taxonomic position of in the apple tribe, Maleae. We herewith provide a taxonomic checklist of for further taxonomic and evolutionary studies.

Phylogenomic and morphological evidence reveal a new species of spider lily, (Amaryllidaceae) from China.

, a new species from China, was described and illustrated here. Our phylogenomic evidence based on whole plastomes strongly supported the separate phylogenetic position of this new species, and morphologically it could also be distinguished by its long leaves with a distinct purplish-red midrib on the abaxial surface.

Characterization, Sources and Excessive Cancer Risk of PM-Bound Polycyclic Aromatic Hydrocarbons in Different Green Spaces in Lin'an, Hangzhou, China.

PM samples were collected from residential, commercial, plaza and public green spaces in Lin'an, Hangzhou, in spring (March and April) and winter (February and December) in 2017. PAHs were detected by gas chromatography-mass spectrometry (GC-MS), and their sources were identified using the diagnostic ratio (DR) and principal component analysis-multiple linear regression (PCA-MLR). The average PAH concentration in winter was 1.