dcsimg

Associations

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Foodplant / saprobe
fruitbody of Leucoagaricus americanus is saprobic on decayed, composted woodchips of Pinopsida

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Comprehensive Description

provided by North American Flora
Lepiota americana Peck, Ann. Rep. N. Y. State Mus. 49:
56. 1897.
Agaricus americanus Peck, Ann. Rep. N. Y. State Cab. 23: 71. 1872.
Pileus fleshy, ovoid to campanulate and expanded, umbonate, solitary or subcespitose, 5-10 cm. or more broad; surface radiate-fibrillose beneath the cuticle and at first white, the cuticle brickcolored or bay-brown, at first continuous, soon breaking up except upon the umbo into small scales, which are gradually drawn apart and scattered over the surface, substriate on the margin ; context thin, white, changing to dull-red or smoky-red when bruised or on drying; lamellae rather narrow, close, free, white; spores ovoid or subellipsoid, uniguttulate, subhyaline, 7.5-10X5-7 /*; stipe tapering upward from the more or less thickened and elongate base, fistulose, smooth, subglabrous, white, changing to red when bruised, 8-12 cm. or more long, 4—6 mm. thick at the apex, 8-12 mm. thick at the base; annulus thin, membranous.
Type locality: Buffalo, New York.
Habitat: Rich soil in grassy grounds or around old stumps, or on compost heaps. Distribution: New Brunswick to Alabama and west to Iowa.
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bibliographic citation
William Alphonso Murrill. 1914. (AGARICALES); AGARICACEAE (pars). North American flora. vol 10(1). New York Botanical Garden, New York, NY
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Leucoagaricus americanus

provided by wikipedia EN

Leucoagaricus americanus is a mushroom in the genus Leucoagaricus, native to North America.[2] It was first described by Charles Horton Peck, an American mycologist of the 19th and early 20th centuries, in 1869. It is widely distributed in North America, though more common east of the Rocky Mountains; it is saprobic, and grows on sawdust, on wood chips, on stumps, and on the ground.[3]

Description

The cap is 3–15 cm and oval in shape when immature, becoming convex to flat when fully grown. The cap feels dry and smooth at the beginning, but gradually gets reddish to reddish brown scales. It is white in color but reddens with maturity or after being handled.[3] The gills are free from the stipe and lie close together. They appear white when young and are stained pinkish to maroon. The stipe is 7–14 cm long, often enlarged at or below the middle and tapering toward the base. It appears white at first, staining or aging pink or reddish brown. It feels smooth with its silky hairs. The membranous veil leaves a white double edged ring on the upper stipe that may disappear in age.[2] The spores are white to cream in color and measure 8–10 x 6–7.5 µm.[1] The flesh is white throughout. It bruises yellow to orange when young but dries reddish when mature. The flesh is thick and discolors when cut, bruised or damaged.[2] It is reported to be edible, but not recommended for consumption because of possible confusion with toxic species like Chlorophyllum molybdites.[2]

See also

References

  1. ^ a b Wood, Michael; Fred Stevens. "California Fungi—Leucoagaricus americanus". Mykoweb. California Fungi.
  2. ^ a b c d Rogers Mushrooms. "Leucoagaricus americanus". Archived from the original on 2011-11-09.
  3. ^ a b Kuo, M. (2005, October). Leucoagaricus americanus. Retrieved from the MushroomExpert.Com Web site: http://www.mushroomexpert.com/leucoagaricus_americanus.html
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Leucoagaricus americanus: Brief Summary

provided by wikipedia EN

Leucoagaricus americanus is a mushroom in the genus Leucoagaricus, native to North America. It was first described by Charles Horton Peck, an American mycologist of the 19th and early 20th centuries, in 1869. It is widely distributed in North America, though more common east of the Rocky Mountains; it is saprobic, and grows on sawdust, on wood chips, on stumps, and on the ground.

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