Acknowledgments
We sincerely thank Ms. Wen-Qin Yuan, Ms. Ying Cao, Mr. Xin Pang, and
others for their hard cooperation in field investigation for many years.
They are all from the Chengdu University of Technology. We gratefully
recognize the persons from the wildlife protection division of Sichuan
Forestry and Grassland Administration, the various levels of locality
protection and management department, and local guides, for providing
convenience for our field investigation. This project was supported by
the Special Project of Orchid Survey of National Forestry and Grassland
Administration (contract no. 2019073015 and no. 2019073016)