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Armillaria Ostoyae

All articles tagged with #armillaria ostoyae

science2 days ago•15 min saved

Hidden Giant Beneath Oregon: A Single Honey Fungus Spans 3.5 Square Miles

A single Armillaria ostoyae fungus under Oregon’s Malheur National Forest covers about 2,385 acres (roughly 3.5 square miles) and is estimated to be 2,000–8,500 years old, making it the largest known living organism on Earth. Its underground mycelium and rhizomorphs slowly kill trees to feed the colony, while the visible autumn mushrooms are small and transient. DNA fingerprinting and vegetative pairing proved the entire forest-wide network is one genet. There is no way to eliminate it; management focuses on planting resistant species and careful thinning to slow its spread.

via Space Daily|

#armillaria-ostoyae #honey-mushroom #largest-organism

science3 months ago•2 min saved

Oregon's Hidden Giant: The 8,650-Year-Old Honey Fungus Spanning 3.7 Square Miles

The world’s largest known organism is a single honey fungus (Armillaria ostoyae) in Oregon’s Malheur National Forest, covering about 3.7 square miles with an extensive underground mycelial network and rhizomorphs. Genetic tests revealed it is a single clonal individual that killed trees by enzymatic decay, and estimates place its age between roughly 2,400 and 8,650 years.

via BBC Wildlife Magazine|

#armillaria-ostoyae #honey-fungus #largest-organism

science3 months ago•2 min saved

Oregon's Glowing Giant: the World’s Largest Organism

The world’s biggest and oldest organism is a single clone of honey fungus (Armillaria ostoyae) in Oregon’s Malheur National Forest, spanning about 3.7 square miles. Its vast underground mycelial network (with rhizomorphs) grows by feeding on trees, while the surface shows bioluminescent hints known as foxfire. Estimates place its age between 2,400 and 8,650 years, underscoring how a fungus can dwarf all other life in scale.

via BBC Wildlife Magazine|

#armillaria-ostoyae #bioluminescence #honey-fungus

science11 months ago•4 min saved

Giant 35,000-Ton Organism May Be Earth's Largest

The humongous fungus in Oregon, known as Armillaria ostoyae, is the largest organism on Earth by mass, spanning 2,385 acres and weighing around 35,000 tons, primarily existing as an underground network of mycelium that plays a crucial role in decomposing organic matter and recycling nutrients, with debates ongoing about its true size and the definition of an organism.

via Indian Defence Review|

#armillaria-ostoyae #ecological-role #humongous-fungus