Observation 193919: Pleurotus ostreatus (Jacq.) P. Kumm.

When: 2014-12-17

Collection location: Brooks, Summers Co., West Virginia, USA [Click for map]

Who: 4rum (4rum)

No specimen available

Found 12-15-14 in woodland forrested mostly with poplar. Stype went pretty deep I am not positive but it felt like it might have been growing from an underground branch or root. The brown cap is very distinctive. It’s a beautiful color of deep brown. Please note that there are two small mushrooms growing from the bulb of the two larger ones. The small ones are growing from the bulb, not random. Since there are two larger mushroom I laid them, one on a white paper towel, the other on a dark mat. I checked often but saw no spores. I checked again first thing this morning. The spores shed overnight were a cream color. I don’t know if the color changed with time overnight. The color wasn’t tan or brown, but a nice color sort of like coffee with lots of cream. I spend a lot of time in the woods. I have never seen this mushroom before. I did a little looking on google and in the field guides I now have. I was unable to distinguish enough of it’s characteristics to ID it. Any help greatly appreciated.


12-15-14 oggy tamron oyster blue jay persimmon geese gull 040 brown mushroom4 - 1000.jpg
12-15-14 oggy tamron oyster blue jay persimmon geese gull 033 brown mushroom1 - 1000.jpg
12-15-14 oggy tamron oyster blue jay persimmon geese gull 034 brown mushroom2 - 1000.jpg
12-15-14 oggy tamron oyster blue jay persimmon geese gull 036 brown mushroom3 -.jpg

Proposed Names

25% (1)
Recognized by sight

Please login to propose your own names and vote on existing names.

Eye3 = Observer’s choice
Eyes3 = Current consensus


Add Comment
Many thanks
By: 4rum (4rum)
2014-12-18 01:27:25 PST (-0800)

to Dave W and Walt Sturgeon for their invaluable help with an ID for this beautiful brown winter mushroom.


I’ve been watching new fruitings of P. ostreatus
By: Terri Clements/Donna Fulton (pinonbistro)
2014-12-17 21:05:43 PST (-0800)

on the same stump as the weather turns cooler and they are definitely turning browner: see photos 4 and 5 on obs 191882. I was wondering if the cooler weather had something to do with it. Normally we don’t see them at this time of year due to lack of rain so I’ve never seen them quite this brown. Picked some yesterday that were cocoa brown—wish now I had taken a photo. Thanks for the information Walt.


Actually, 4rum, the person who made this collection…
By: Dave W (Dave W)
2014-12-17 19:31:14 PST (-0800)

has been recently posting lots of really nice brown Oysters from W. Virginia. Despite having seen many of his photos, this collection just seemed very unusual to me. I guess the long (for Pleurotus) central stipe and the funnel-shaped caps are the result of the mushroom “reaching” up from underneath a log to find an open space for expansion.

I don’t often see these late-occurring brown ones here in NE PA. Probably usually gets too cold too soon.

Brown Pleurotus
By: walt sturgeon (Mycowalt)
2014-12-17 17:59:47 PST (-0800)

is a form (species?) found in cool weather.

Walt, this one had been posted…
By: Dave W (Dave W)
2014-12-17 10:23:37 PST (-0800)

on another discussion board… had me completely stumped. I’ve never seen P. ostreatus with cap surface so brown and seemingly textured. Light, but not white, spore print seemed to point toward Pleurotus. I had thought maybe this represented some cultivated species that spread into the wild.

Created: 2014-12-17 04:49:51 PST (-0800)
Last modified: 2014-12-17 08:11:46 PST (-0800)
Viewed: 76 times, last viewed: 2017-06-19 13:24:58 PDT (-0700)
Show Log