FORMIDALE FUNGHI [via Nina Reznick]


The largest living organism ever found has been discovered in an ancient American forest.

The Armillaria ostoyae, popularly known as the honey mushroom, started from a single spore too small to see without a microscope. It has been spreading its black shoestring filaments, called rhizomorphs, through the forest for an estimated 2,400 years, killing trees as it grows. It now covers 2,200 acres (880 hectares) of the Malheur National Forest, in eastern Oregon.

The outline of the giant fungus stretches 3.5 miles (5.6 kilometres) across, and it extends an average of three feet (one metre) into the ground. It covers an area as big as 1,665 football fields.
The discovery came after Catherine Parks, a scientist at the Pacific Northwest Research Station in La Grande, Oregon, in 1998 heard about a big tree die-off from root rot in the forest east of Prairie City.


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