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Coprinus comatus

life science Maturity 11-13 Next article →

The shaggy ink cap, known scientifically as *Coprinus comatus*, is a unique species of fungus.

Coprinus comatus, the shaggy ink cap, lawyer's wig, or shaggy mane mushroom
Coprinus comatus, the shaggy ink cap, lawyer's wig, or shaggy mane mushroom

It is also called the shaggy mane or the lawyer's wig. This mushroom is significant because it belongs to the *Coprinus* genus. It is the type species for this group. This means it is the primary example used to define the genus. While the genus once included over 100 species, modern DNA analysis has changed our understanding. Scientists found that many of those species actually belong to different families, such as Agaricaceae or Psathyrellaceae. *Coprinus comatus* remains the most well-known member of the true *Coprinus* group.

The growth of the shaggy ink cap follows a very specific and rapid process.

Initially, the young fruit bodies appear as white cylinders emerging from the soil. As they mature, the caps expand into a distinct bell shape. The cap is mostly white and is covered in shaggy scales. These scales are sometimes pale brown at the very top, or apex. Below the cap, the mushroom has thin structures called gills. These gills undergo a process called deliquescence. This means the gills actually melt themselves into a black liquid. This liquid is filled with spores, which is why the mushroom is called an ink cap. This process can happen within just a few hours of the mushroom being picked.

Coprinus comatus cap inc afler
Coprinus comatus cap inc afler

There are several physical measurements that define the appearance of this fungus.

The cap width typically ranges from 4 to 8 centimeters. In terms of height, the cap can reach between 6 and 20 centimeters. The stem, or stipe, is white and relatively thick. It measures 6 to 40 centimeters in height. The diameter of the stipe is usually between 1 and 2.5 centimeters. Near the bottom of the stipe, you can find a loose ring, also called an annulus. Microscopically, the mushroom is identified by a lack of pleurocystidia. The spores themselves are quite small, measuring 10 to 13 by 6.5 to 8 micrometers. When the mushroom leaves a spore print, the color is black-brown.

Coprinus comatus spores
Coprinus comatus spores

History shows how scientists have classified this mushroom over many years.

Lawyer's Wig (Coprinus comatus) Mushrooms (15050)
Lawyer's Wig (Coprinus comatus) Mushrooms (15050)

The Danish naturalist Otto Friedrich Müller first described the species in 1780. At that time, he named it *Agaricus comatus*. Later, in 1797, Christiaan Hendrik Persoon gave it the binomial name we use today. The specific name *comatus* comes from the Latin word *coma*, which means hair. This name was chosen because of the shaggy, hair-like appearance of the scales. Understanding these names helps researchers track how our knowledge of fungi has evolved through taxonomy.

The habitat and distribution of the shaggy ink cap are quite wide.

Coprinus comatus (30661168342)
Coprinus comatus (30661168342)

It is commonly found in the Northern Hemisphere growing in grasslands and meadows. You might see them in lawns or near gravel roads. In the United Kingdom, they typically appear from June through November. The species has also been introduced to places like Australia, New Zealand, and Iceland. In Australia, the mushroom is common enough that it was featured on a postage stamp in 1981. This shows how much the fungus is recognized in local culture.

Coprinus comatus G4
Coprinus comatus G4

While many people consider the shaggy ink cap a choice edible mushroom, there are risks.

It is best to eat them when they are young and before the gills turn black. As the gills melt, the taste can become bitter. However, you must be very careful not to confuse them with poisonous species. For example, the magpie fungus, or *Coprinopsis picacea*, looks similar. In America, the *Chlorophyllum molybdites* mushroom is responsible for many poisonings because it looks like the shaggy mane. Another similar mushroom is *Coprinopsis atramentaria*, which contains coprine. Consuming coprine along with alcohol can cause poisoning. Fortunately, *Coprinus comatus* does not have this specific effect.

Beyond its appearance and edibility, the shaggy ink cap plays a role in its ecosystem.

Saprotrophic fungus
Saprotrophic fungus

It is a nematophagous fungus. This means it is capable of killing and digesting certain nematodes. Specifically, it can target species like *Panagrellus redivivus* and *Meloidogyne arenaria*. By interacting with these tiny organisms, the fungus participates in the complex biological cycles of the soil. This ability to hunt microscopic worms adds another layer of complexity to how we understand its life in the wild.

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🖼️ Images & Media (14)
File:Open Access logo PLoS transparent.svg
Open Access logo PLoS transparent.svg
File:Status iucn3.1 LC.svg
Status iucn3.1 LC.svg
File:Saprotrophic fungus.svg
Saprotrophic fungus.svg
File:Tintlinge 5145.jpg
Tintlinge 5145.jpg
File:Coprinus comatus cap inc afler.jpg
Coprinus comatus cap inc afler.jpg
File:Coprinus comatus-3 hg.jpg
Coprinus comatus-3 hg.jpg
File:Coprinus comatus (30661168342).jpg
Coprinus comatus (30661168342).jpg
File:Coprinus comatus Aberystwyth 141025.jpg
Coprinus comatus Aberystwyth 141025.jpg
File:Coprinus comatus (30053094063).jpg
Coprinus comatus (30053094063).jpg
File:Coprinus comatus G4.JPG
Coprinus comatus G4.JPG
File:Lawyer's Wig (Coprinus comatus) Mushrooms (15050).jpg
Lawyer's Wig (Coprinus comatus) Mushrooms...
File:Coprinus comatus, the shaggy ink cap, lawyer's wig, or shaggy mane mushroom.jpg
Coprinus comatus, the shaggy ink cap,...

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