The IAWA sincerely invites you to participate in the Global Xylaria Survey, which is available under “wood collections” on the IAWA website (http://www.iawa-website.org/global_xylaria_survey/), sharing information of your xylarium with the international wood anatomy community. This official survey is a follow-up to the IAWA Index Xylariorum 4.1, which was released in 2016 by IAWA. The webpage on the IAWA website has been recently. In the future, every curator may continuously update information for his/her xylarium at any time. All information will be used for research purposes and shared by all xylaria/ IAWA members for better communication within the wood anatomy research community. Please visit the IAWA website to submit the information of your xylarium, and also refer to IAWA Index Xylariorum 4.1: http://www.iawa-website.org/uploads/soft/Abstracts/Index Xylariorum 4.1.pdf. You are cordially requested to submit the survey. Please contact Dr. HE Tuo (tuohe@caf.ac.cn) if you have any questions.