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King Stropharia identification

Stropharia rubosoannulata mushroomI'm a bit shocked by my own mycophobia --- I almost threw away the first King Stropharia mushroom that popped up from our graywater mycoremediation project.  This is our first year growing Stropharia rugosoannulata, but that's really no excuse.  I was the one who researched and chose the species and personally inoculated the wood chips.  But the mushroom that sprang up didn't look all that much like the pictures I'd quickly browsed on the internet, and I thought a wild fungus had invaded my mycoremediation project.

After a more lengthy perusal of the internet (and my field guide to mushrooms), I decided this lovely specimen was indeed a King Stropharia.  We ate it sauteed in garlic last night, so I assume I was right.  Here are the top tips I've run across for King Stropharia identification.

Closeup of a Stropharia rubosoannulata ringFirst, take a look at the ring around the mushroom's stem.  Several other mushrooms have rings, but the ring on a King Stropharia mushroom has indentations from the gills along the top, giving it a lined appearance.  The lined ring is probably one of the most diagnostic features of King Stropharia.

Next, take a look at the gills on the underside of the cap.  Notice that they are attached to the stem and are a purply-gray in color.  If the gills are free, then you might have an Agaricus, so beware!  Some Agrocybe mushrooms can look similar too, but have brown gills.

Stropharia rugosoannulata gills

Cap of a Stropharia rugosoannulataThe top of the cap is often maroon in young specimens, but can also be plain old brown (especially as the mushroom ages), so cap color isn't so diagnostic.

I find it interesting that our mycoremediation patch has fruited while the patches I inoculated at the same time under the canopies of nearby fruit trees have not.  Clearly, the bit of bleach in the dishwater doesn't hurt King Stropharia one bit, and frequent soakings are a boon.  Paul Stamets has written that King Stropharia mushrooms may actually depend on coliform bacteria for growth --- perhaps the bacteria going down the drain have helped our mycoremediation patch come out ahead?

Our homemade chicken waterer prevents the leading cause of backyard chicken burnout --- filthy water.


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:)

This is funny and it reminds me of when Seth and I grew our first baby lettuce. We KNEW what the lettuce was supposed to look like, and we KNEW that some of them were bitter, but every time we took a bite of it we were a little uneasy and we asked ourselves "Are we really eating lettuce and not some toxic weed that sprung up in the garden?" I even KNEW nearly all the weeds that could have grown up there, and logically I knew that this wasn't one of them.

It was really silly to me that I had that kind of phobia of eating my own garden veggies. This was the first garden we grew and I thought I'd be a lot more confident, but I just couldn't ditch the doubt.

Anyway, congrats one the mushroom growing and proper identification! We're hoping to start with mushrooms within the next year or so and if we plan to grow this species, this ID will definitely help us. Thanks.

Comment by Sara Thu Sep 9 09:57:43 2010
I'm glad I'm not the only one afraid to eat out of my own garden... :-)
Comment by anna Thu Sep 9 11:59:55 2010

I started a forest garden in my yrd last fall. Started with a 110' swale that accepts overflow water from rain barrels. Along side the swale is 110' of hugelkultur

I planted lots of perennials and lots of other seeds this spring

In summer my sister of 60 years decided to visit. She's a compulsive weeder

I had to be honest at one point and say "sis, I planted a lot of stuff and I have no idea what they look like so could we not pull weeds so quickly?"

The only things I knew for sure were the trees / shrubs and the 28 comfrey because they're big and input them there specifically

Comment by Rob - @formerfatguy Tue Nov 12 13:17:15 2013
Thank you for this info.. I have done exactly the same thing... Been waiting patiently for months and was just blown away to discover monster sized mushrooms and like yourself wondered if maybe the wood chip had been invaded.. Am so exited the sheer size and number is incredible :)))
Comment by Anonymous Wed Jun 29 16:30:20 2016

One very unique homestead, $1,500 per acre, the opportunity of a lifetime