2.5. Constructing the phylogenetic tree
We have collected 47 species of annual ephemerals from 13 families, 41 genera, and deserts in northern Xinjiang, China. With the help of theFlora of China section of the iplant website (http://www.iplant.cn/) is provided to retrieve the latest revised Latin scientific names of various species based on their Chinese scientific names. Using the plantlist package and V. PhyloMakerpackage to construct an evolutionary tree based on the APG IV system in R 4.2.1 (Zhang, 2018; Jin & Qian, 2019). Visualization of phylogenetic tree was help of online software iTOL (https://itol.embl.de/tree/).