urbpan: (dandelion)
 photo P1030285_zpsd9aywvvm.jpg
Two different mushrooms on the ground, no big deal, right? But if you get flat on the ground to examine them (as you do--well I do, sorry if you don't swing that way) you'll notice that they have some similarities. In fact, I'm pretty sure they're the same species--two mushrooms from the same underground mycelium. What accounts for the difference? Why, a parasite, of course.

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urbpan: (dandelion)

These boletes, infected with what is probably Hypomyces chrysospermus were growing at the base of one of the eastern white pines in my yard.

Hypomyces chrysospermus is a fungus that feeds on other fungi. It has a preference for bolete mushrooms--those with porous undersides rather than gills--first attacking the spore-bearing surface with a white mold. After the mold has consumed the mushroom, its tissue turns bright yellow, the color of its own spore-producing cells.

A related mold, H. lactifluorum attacks Russula and Lactarius mushrooms, turning them into the sought-after edible called "lobster mushrooms." Boletes parasitized by golden bolete mold are not considered edible.

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May 2017

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