Pluteus petasatus

Cortinarius husseyiKey to Gilled Mushrooms     Key
This is a key to gilled mushrooms, that is, mushrooms having a definite cap with a fertile surface consisting of gills. The fruiting body usually also has a stem, although that may be lateral or absent (usually, then, the mushroom is growing from wood). You can use this key to identify mushrooms that you find.

TricholomaAgaricales     Order
Fruiting body containing fibers (usually in the stalk)

Pink Spored     Suborder
Spores pink or reddish

Pluteus cervinusPlutaceae     Family
Gills free
Often growing on wood

Pluteus petasatusPluteus     Genus
Lacking a volva
Growing on wood or woody debris
Typically bluntly conical or campanulate when young, becoming umbonate (often a flat cap with a very small umbo) in age
Often somewhat scaly or fibrillose on the disk

Pluteus petasatusWhite Pluteus     Section
Cap white or light grey; sometimes with more darkly-colored fibrils

Pluteus petasatus     (Fries) C. C. Gillet

Here are the characters that distinguish this species from the others in its group. For its more general characters, see higher up on the page.
If there's just a few words or a microscopic feature here, a more thorough description can be found above.

Pluteus petasatus


Microscropic Characters


Pluteus petasatusIt seems that whenever you find any robust, fibrillose Pluteus, it ends up keying out here. For instance, the first Pluteus I ever found had a grey cap with flattened tufts of salmon-colored fibrils. I took it to Clarke T. Rogerson, and he called it P. petasatus. Similarly, the mushroom in this photo ended up being called petasatus, though I'm not sure anymore who made the attribution
The stature is more robust, and the flesh firmer than yer average Pluteus, and its growth in clusters is actually an important feature in identifying it