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Armillaria ponderosa.   Click a photo to enlarge it.   back to list

synonyms: Tricholoma magnivelare, White Matsutake
Armillaria ponderosa Mushroom
Ref No: 7071
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Armillaria ponderosa top.jpg Mushroom
Ref No: 9791
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Armillaria ponderosa gills.jpg Mushroom
Ref No: 9792
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location: North America
edibility: Choice
fungus colour: White to cream, Orange
normal size: over 15cm
cap type: Convex to shield shaped
stem type: Ring on stem
flesh: Flesh discolours when cut, bruised or damaged
spore colour: White, cream or yellowish
habitat: Grows in woods, Grows on the ground, Grows on wood

Armillaria ponderosa (Pk.) Sacc. New syn. Tricholoma magnivelare White Matsutake Cap 5-20cm across, convex becoming flatter with an inrolled, cottony margin becoming somewhat uplifted in age; white with flattened reddish-brownish scales and spots, particularly over the center; tacky becoming dry with streaks of brown fibers near the margin. Gills adnexed, crowded, narrow to broad; whitish staining pinkish brown. Stem 50-150 x 20-40mm, hard, firm; white becoming pinkish brown from scales and patches of veil remnants; white and cottony above the ring. Veil partial veil leaves thick, soft, membranous ring on the upper stalk. Flesh firm; white. Odor distinctly fragrant. Spores broadly ellipsoid to globose, smooth, nonamyloid, 5-7 x 4.5-5.5. Deposit white. Habitat scattered to numerous under pine and in sandy soil, especially near coastal areas. Common. Found in northern North America and the Rockies. Season August-November (December-February in California). Edible-excellent. Comment. Known among Orientals as the White Matsutake. This is one of the most sought after edible mushrooms.

Members' images and comments

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Dan Hernden (United States) - 12 September 2014

Found in N. Michigan under hemlock and fir. Fairly confident ID but any comments appreciated.
Armillaria ponderosa gills.jpg
Dan Beck (United States) - 29 December 2013

I think I've IDed this correctly, but not completely certain
Armillaria ponderosa gills.jpg
Todd Shury (Canada) - 16 July 2011

Collected near Big River, Saskatchewan, Canada under jackpine (pinus banksiana) Aug. 29 2007.
Armillaria ponderosa gills.jpg
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