Ancient 'D-rex' Fungus Found in China, Tracing 65 Million Years

WHO:

Phys.org - Scientists involved in the discovery of the fungus include researchers from Yunnan, China.

WHAT:

Phys.org - The newly described species is named Dianjunus rex.

Phys.org - Dianjunus rex produces vertical fruiting bodies that can reach up to 50 cm (20 inches) in height and weigh up to 2.2 kg (4.9 pounds).

Good News Network - The fungus is noted as the largest known within the phylum Ascomycota.

WHERE:

Phys.org - The discovery was made in the forests of Yunnan, China.

WHEN:

Phys.org - The lineage of the fungus dates back 65 million years.

WHY:

Good News Network - The discovery challenges existing understanding of how large fungi can become.

HOW:

Phys.org - The methods of discovery are not detailed in the articles.

(UPDATED October 14, 2026 08:02 UTC)

Scientists in Yunnan, China have discovered a new species of fungus named Dianjunus rex, which is noted as the largest known within the phylum Ascomycota. This remarkable fungus produces vertical fruiting bodies that can reach heights of up to 50 centimeters and weigh as much as 2.2 kilograms. The lineage of Dianjunus rex dates back 65 million years, challenging existing understanding of how large fungi can grow.