Saw these mushrooms the other day on Stonebriar Drive.  They are so striking, I had to stop and get their picture.  While I was at it I put the Seek app on them, just to verify my suspicion that they are Jack O'Lanterns.  Yep, Seek called them Eastern American Jack O'Lantern, Omphalotus illudens.  

 

I love this app, it tells me that:  Jack O'Lantern mushrooms are large orange mushrooms, often found in clumps on decaying stumps, buried roots, or at the base of hardwood trees in eastern North America.

 

My National Audubon Society field guide tells me that:  IT IS POISONOUS, typically causing gastric upset for a few hours to 2 days.  And this:  When this species is gathered fresh and taken into a dark room, the gills give off an eerie green glow.   OOOH.   I'll just take their word on that; I'm leaving them alone.

 

HAPPY HALLOWEEN!!!