Eight new fungi were hiding on ordinary leaves — and their family tree begins in Asia, 49.5 million years ago

For three years, researchers from Shandong Agricultural University walked the warm forests of southern China picking up ordinary leaves — bamboo, banana, grasses, reeds — and looking very closely at the tiny fungi living on them. What they found was a family album nobody knew existed: eight species of Microdochium, a group of microscopic fungi, that are completely new to science. By comparing the fungi's DNA, the team also traced the whole family's birthplace to Asia about 49.5 million years ago, when the world was warmer and tropical forests reached much farther. Some Microdochium relatives attack wheat and barley, so knowing exactly who is who — and where the family began — helps scientists spot crop diseases earlier and protect harvests. The team says the tropics still hide many more of these tiny neighbours, waiting on the next leaf someone bothers to pick up.