Edible, wild fungi of South Australia post #8 Scotch Bonnets (Marasmius oreades)

in ecoTrain6 months ago

Hi everybody! Here's number 8 in this early season ID guide for South Australian edible mushrooms. This one is about that easy to find, easy to identify Scotch Bonnets.

Scotch Bonnets (Marasmius oreades)

Phylum: Basidiomycota. Class: Agaricomycetes. Order: Agaricales. Family: Marasmiaceae

Scotch Bonnets (Marasmius oreades) get their name from the shape of the cap. It has a little nipple-like bump called an 'umbo' in the middle and its overall shape looks like piece of headwear that was worn in Scotland a while back. Their other common name ‘Fairy Ring Champignon’ comes from the fact that this is the mushroom that makes fairy rings in lawns. 'Champignon’ means basically ‘edible mushroom’. They can grow in clusters or in open ended arcs (incomplete circles) as well, so the rings are only a guide to identification, not a fixed characteristic.

Fairy rings are, traditionally, where Fairies dance. This dance is invisible to most humans and to cross the circle during a dance is happening, you will be compelled to join in! So for dignity’s sake, harvest from outside the circle.

Interestingly, the grass close to a Scotch Bonnet is greener than grass that is not so near. This is thought to be because of a hormone that the mushroom releases that makes the grass greener. Maybe this is an evolutionary adaptation to lure grazing animals that will then eat the grass and mushroom and distribute the spores that way? Maybe it’s a way to lure Scotsmen?

The nipple-like bump in the middle of the cap is a distinguishing feature.

Scotch Bonnets can dry out completely and spring back to life when water it rains. That is caused by a sugar called trehalose, which prevents severe cell damage when the mushrooms become dried out. As the mushroom cells rehydrate, they eat the trehalose and this helps them return to normal and even start producing spores again! That sugar also has the benefit of making the mushroom taste sweet taste when cooked. It’s my favourite dried mushroom.

Dried out…

just add water.

Scotch Bonnets usually occur early in the season. There are a few similar mushrooms that grow in similar conditions so make sure you check the ID guide below.

The gills are widely spaced and do NOT continue down the stem.

The cap starts off bell shaped

then flattens out as it ages

Identifying Scotch Bonnets – a summary:

If you’re in a grassed area and find a ring or a partial ring of something that you think could be a Scotch Bonnet, look for these details –

  • Cap is 2 – 5 cm across. Creamy white to tan in colour with a distinctive nipple (called an ‘umbo’) in the middle that is usually darker than the rest of the cap.
  • The cap starts off bell shaped, then flattens out as it ages.
  • The gill colour is cream.
  • Gills are widely spaced and DO NOT continue down the stem. There is another, inedible, mushroom that grows locally in similar locations which has gills that do.
  • The widely spaced gills have smaller gills in between them.
  • Smooth, tough stem, up to 5 cm long and solid. Up to 5 mm in diameter
  • Spore colour is white.
  • The dried mushroom will reconstitute itself when water is added.

Spore print is white.






There are different types of mushrooms here, too, and I don't know which ones are edible.

I only know of a mushroom like the one that pops up on the grass. Its local name is grass mushroom and it is edible. looks like the one in the picture.

That could be it!

Thank you for this fascinating read! I love forraging for mushrooms for my pies! Nothing beats the flavour of wild mushrooms. Just lovely. The identification information is immensely important. Thank you for being so thorough!
Here's my pie recipe, if you want to give it a whirl!


In our area, the name of this mushroom is consonant with garlic), excellent mushrooms, one of the first who can fill your frying pan)

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I have always found it difficult to identify fungi ! Luckly we have people like you! LOL the question is always: is this poison or edible?

It looks like someone had a tasty lunch after a great walk! :) The thing with rehydrating is super interesting! I didn't know that fungi could do that!

I have picked this post on behalf of the @OurPick project and it will be highlighted in the next post!

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