Green compact: This is how you recognize and avoid it

Photo: Colourbox.de / nito

The greenling is a toadstool that is mainly at home in sandy pine forests and was previously eaten. You can find more information about the lamellar fungus here.

The greenling (Tricholoma equestre) is a lamellar fungus from the family of knight relatives. From the German Society for Mycology he became Mushroom of the year 2021 appointed. Until not so long ago it was a popular and tasty edible mushroom. In the meantime, however, experts warn against consumption after more than a dozen cases of poisoning occurred in 2001, some of which were fatal.

Green compacts: edible or toxic?

The German Society for Mycology explains that the incidents in 2001 were severe cases of rhabdomyolysis, so that certain muscle fibers dissolved. This includes the heart muscles. This releases myoglobin, a vital protein that is responsible for transporting oxygen in the muscles. However, if it is present in excessively high concentrations outside of the muscles, it can lead to acute kidney failure. The affected people had consumed a large amount of greens for several days or weeks and had suffered muscle weakness, some of which were fatal.

Since then, experts have advised against eating greens. But since in older mushroom books and guides the green body is often still referred to as Edible mushroom is declared, some of the green compact will continue to be harvested and consumed.

The Federal Institute for Risk Assessment (BfR) commented in a statement from 2004 on the health risks of eating green vegetables. As a result, it is stated there that no conclusive risk assessment is possible due to the data basis at the time. Up to 2004, the BfR was not aware of any German cases of rhabdomyolysis due to the consumption of green compacts. The institute therefore classified the risk of an intolerance reaction as “rather low”.

According to the German Society for Mycology, more recent studies also question the general toxicity of the fungus. So in a study from 2018 claims that the green compact cannot be considered a toxic species and that it poses no greater health hazard than other mushrooms currently classified as edible.

The German Society for Mycology itself, however, continues to advise against consuming green foods.

Green bodies grow here and this is how you recognize them

Green compacts grow in sandy pine forests.
Green compacts grow in sandy pine forests.
(Photo: CC0 / Pixabay / jackmac34)

According to the German Society for Mycology, green bodies grow in sandy pine forests. On the surface, the fruiting body appears from August to November.

Look at this features you can tell whether a mushroom is green:

  • The mushrooms have a cushion-shaped hat up to 12 centimeters wide, which is covered with adjacent scales and can be yellow-greenish to brown-greenish in color.
  • The surface of the hat is damp and greasy, so needles and grains of sand often stick to it.
  • On the underside of the hat there are narrow but deep lamellae that can have a sulfur to lemon yellow color.
  • The stem is up to ten centimeters long, cylindrical and usually lighter in color than the hat.
  • The meat tastes and smells floury and gherkin.

With the green body there is Risk of confusion with other mushrooms:

  • Galliger Ritterling: It has a more conical hat shape and a sharp taste.
  • Sulfur Knight: This is a poisonous mushroom. It can be distinguished from the green compact by its lamellas standing apart (the green compact has narrow lamellae) and a very strong and noticeable odor.
  • Green and yellow knight: in contrast to the green, its lamellae are whitish. It is edible.
  • Green cap mushroom: it is poisonous and can be fatal. It can be yellow-green to olive-green or olive-brown.

Green line and species protection

According to the Federal Species Protection Ordinance (BArtSchV) to the specially protected species. It is therefore forbidden in Germany to harvest the mushroom in large quantities and neither damage nor destroy it or its locations. Small amounts for your own use are allowed – but be aware that the German Society for Mycology advises against eating green vegetables.

Read more on Techzle.com:

  • Identifying mushrooms: 3 apps in comparison
  • Growing mushrooms yourself: you have to pay attention to this
  • Mushroom pan: recipe with fresh mushrooms and herbs

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