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Poronidulus conchifer.   Click a photo to enlarge it.   back to list

Poronidulus conchifer Mushroom
Ref No: 8806
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location: North America
edibility: Inedible
fungus colour: White to cream, Grey to beige
normal size: Less than 5cm
cap type: Other
stem type: Lateral, rudimentary or absent
spore colour: White, cream or yellowish
habitat: Grows on wood

Poronidulus conchifer (Schw.) Murr. Fruit body small cups 0.5-2cm wide; white, zoned grayish on inner surface. The cups first appear on the wood and then develop into shelf-like caps 1-5cm across, semicircular or kidney-shaped, sometimes with the small cups still adhering to them. Upper surface of cap whitish to grayish-white or yellowish, with concentric zones, particularly on the margin; smooth to minutely hairy or wrinkled. Tubes 1-2mm deep. Pores 2-4 per mm, angular; white to yellowish. Stem lateral, knoblike, or none. Flesh 0.5-1mm thick; white. Spores cylindrical, smooth, 5-7 x 1.5-2.5µ. Deposit white. Cup-shaped structure sterile. Habitat on dead elms and probably other deciduous wood. Found in central and eastern North America. Season June-November, fruit body overwinters. Not edible. Comment In the first stage of development this fungus can easily be misidentified as a cup fungus.

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Jennifer Baldy (United States) - 31 August 2011

Dichotomous key in Simon&Schuster brought this out to "Trametes", (P. conchifer aka T. conchifer), colleague identified for me as Poronidulus conchifer 95% certain. These were attached to the nest of a Cerulean Warbler, built in May 2011, Kalamazoo County, Michigan. No spores available in ID.
Poronidulus conchifer
Jennifer Baldy (United States) - 31 August 2011

Dichotomous key in Simon&Schuster brought this out to "Trametes", (P. conchifer aka T. conchifer), colleague identified for me as Poronidulus conchifer 95% certain. These were attached to the nest of a Cerulean Warbler, built in May 2011. No spores available in ID.
Poronidulus conchifer
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