Everything about Armillaria Ostoyae totally explained
Armillaria ostoyae is a
fungus commonly known as a
Honey mushroom, and sometimes called
Shoestring Rot.
This is the most common variant in the western
U.S., of the group of
species that all used to share the name
Armillaria mellea.
Armillaria ostoyae is quite common on both hardwood and
conifer wood in forests west of the
Cascade crest. The
mycelium attacks the sapwood and is able to travel great distances under the bark or between trees in the form of black rhizomorphs ("shoestrings").
A mushroom of this type in the
Malheur National Forest in the
Strawberry Mountains of eastern
Oregon, U.S. was found to be the largest fungal colony in the world, spanning 8.9 km² (2,200 acres) of area. This organism is estimated to be 2,400 years old. The fungus was written about in the April 2003 issue of the
Canadian Journal of Forest Research. While an accurate estimate hasn't been made, the total
mass of the colony may be as much as 605
tons. If this colony is considered a single
organism, then it's the largest known organism in the world by area, and rivals the aspen grove "
Pando" as the known organism with the highest living
biomass.
In 1992, a relative of the Strawberry Mountains clone was discovered in southwest
Washington state. It covers about 6 km² (1500 acres).
Another "humongous fungus" is a specimen of
Armillaria bulbosa found at a site near
Crystal Falls,
Michigan covers 0.15 km² (37 acres), and was published in
Nature 356:428-431.
Further Information
Get more info on 'Armillaria Ostoyae'.
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