Researchers sequenced the complete genome of Lei Wan (Gerronema lapidescens), a medicinal mushroom used in Chinese traditional medicine for treating parasites and digestive issues. The study reveals the mushroom’s genetic makeup, including 15,847 genes and over 3 million methylation marks that may control gene expression. They identified 67 gene clusters that could produce medicinal compounds and 521 enzymes for breaking down organic matter. This genetic blueprint will help scientists understand how to cultivate this threatened species sustainably and develop its health benefits.