Last Updated - 2.24.2015
Edible Wild Mushrooms Commonly Found In Pennsylvania And Personally Eaten Regularly
Photo of winecap Stropharia
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Aborted Armillaria
Armillaria abortivum
Aborted entoloma

Almost Bluing
King Boletus

Boletus subcaerulescens

Artist's Conk
Ganoderma applanatum

Bear's Head Tooth
Hericium americanum

Black Trumpets
Craterellus fallax

Clitocybe nuda

Brick Caps / Brick Tops
Hypholoma sublateritium

Cauliflower Mushroom
Sparassis spathulata

Chicken of the Woods
Laetiporus sulphureus

Inonotus obliquus

Comb Tooth
Hericium coralloides

Common Laccaria
Laccaria laccata

Corrugated Cap Milky
Lactarius corrugis

Giant Puffball
Langemannia gigantea

Golden Chanterelle
Cantharellus cibarius

Hedgehog Mushroom Big
Dentinum repandum

Hedgehog Little
Dentinum umbilicatum

Hen of the Woods
Grifola frondosa

Honey Mushrooms
Armilleria mellea

Horn of Plenty
Craterellus cornucopioides

Horse Mushroom
Agaricus arvensis

Hygrophorus Milky
Lactarius hygrophoroides

Lilac Bolete
Xanthoconium separans / Boletus separans

Lingzhi / Reishi
Ganoderma lucidum & G. tsugae

Lion's Mane / Old Man's Beard
Hericium erinaceus

Meadow Mushrooms / Pinkies
Agaricus compestris

Oyster Mushroom
Pleurotus ostreatus

Purple-gilled Laccaria
Laccaria ochropurpurea

Quilted Green Russula
Russula virescens

Red Chanterelle
Cantharellus cinnabarinus

Rooted Oudemansiella
Oudemansiella radicata

Shaggy Mane
Coprinus comatus

Smooth Chanterelle
Cantharellus lateritius

Tinder Fungus
Fomes fomentarius

Turkey Tail
Trametes versicolor / Coriolus versicolor / Polyporus versicolor

Two-colored Bolete
Boletus bicolor

Voluminous-latex Milky
Lactarius volemus

Winter Chanterelle
Cantharellus tubaeformis
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The Prince ? or Almond Mushroom ?
Agaricus augustus or A. subrufescens
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Wild Food Foraging
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Pleurotus ostreatus

Oyster Mushroom

Some of the authors of mushroom guides wonder why they call these Oyster mushrooms.
Is it the shape they wonder? Or is it the texture? It's been said they have an oyster shape and some indeed do, but many of them don't. My own opinion is that it is due to the way the small pieces feel and look when washed/wet ( slippery ) and because during handling you will smell a hint of fishiness on your hands.
Not to worry though, the smell is gone upon cooking.

Wet weather in the spring and fall will bring out the Oyster mushroom varieties.

The spring variety of oytser mushroom that you may find may be a different species ( Pleurotus pulmonarius ) than the fall oyster ( Pleurotus ostreatus ) depicted here.
The spring/summer species is lighter in color and generally of a smaller stature. It is a definite and distinct species, not just a color variation.
It has been scientifically concluded there can be no interbreeding of the two different looking types so that means 'different species'.
You'll find oyster mushrooms on dead or dying deciduous trees, either standing or fallen.

Here's a group growing on a standing but dead Tulip Poplar. They stretched on up the tree about twenty some feet.
Photo of Oyster Mushrooms - Pleurotus ostreatus - growing up a Tulip Poplar tree

Often, when these start to appear, you will find so many that you will want to limit yourself on such bounty or you will rue having picked them all because of all that preparation you will face when you get them home.
Here is a group up close. The Oysters found in the fall generally have a light tan or light brownish-gray color. The variety in the spring/summer more on the white side.
Photo of Oyster Mushroom group looking down from above - Pleurotus ostreatus

Here is a view of the same group looking up from below. You will notice the decurrent gills and the lateral stalk. The cap is more or less a continuation and expansion of the stalk so that as the stalk grows out from the tree the cap just keeps getting bigger. You can actually find itty-bitty Oysters that are practically nothing but stalk and gills, at least until it gets bigger.

Oyster's grow in overlapping shelves, whether growing on a downed tree or upright. Occasionally you may find one growing off to the side all by itself.
Photo of Oyster Mushroom group looking up from below - Pleurotus ostreatus

These mushrooms can get to be good sized. Here is another group from the same tree.
Photo of second group of Oyster Mushroom, looking down - Pleurotus ostreatus

If you look closely at this photo you will see what looks like some crumbs on the surface of a cap. That's a sign that the mushroom above has some Oyster beetles getting their daily fill.
In fact, those are crumbs! Oyster crumbs falling from the tunnels above.
The mushroom above is a good candidate for edge trimming since it is a bit big anyway and, more than likely, the beetles have eaten their way into the stalk riddling it with tunnels. Also, when bigger, the stalks are not choice eating. We do not want to be picking Oyster beetles, beetle tunnels and unchoice stalks so leave most of that mushroom on the tree.
Photo of second group of Oyster Mushroom, looking up from below - Pleurotus ostreatus

Best practice when collecting Oysters is to cleanly cut off the shelf one at a time and inspect it for dirt and bugs. Don't put anything in your collection bag or basket that you do not want to eat. Taking your time at the tree will save a lot of cleaning time at home.
Also, because there are so many Oysters to pick from, it's another best practice to be choosey with regard to what you put in the bag. Take only the best pieces and leave the rest.

Pleurotus ostreatus ( Pleurotos sapidus ) - A/K/A Oyster mushroom, Late Oyster, Fall Oyster.
DATE - October 11, 2009. Various days in November and December. My latest find was December 15.
FOUND - Linn Runn State Park, near Rector, Pennsylvania. Growth on an upright dead Tulip Poplar tree. Growing up to twenty feet high in several bunches. Also downed trees in the Kecksburg and Mt. Pleasant area.

Weather conditions: Wet. The two weeks prior to finding these our area has had intermittent rain, more on the rain side than dry. Two straight days of sporadic rain just before finding these.

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