coprinus – The Mushroom Diary – UK Wild Mushroom Hunting Blog

These mushrooms love to be in a crowd! They are one of the first to see in the year, fruiting from mid to late spring all the way through to late autumn/early winter.

The Glistening Inkcap (Coprinellus micaceus) or should I say Inkcaps (plural) in this case, are extremely common; always found in small to large (sometimes very large) and tightly packed groups (caespitose) on or around broad leaf stumps/wood and buried wood. You really can’t miss them.

The best time to find them is when they are young and still with an ovate shaped cap and hopefully haven’t been blasted by wind or rain. You will see the fresh caps are covered in a fine white powder that appears glittery or glistening, hence the common name. This coating, more often than not, will eventually disappear with age and with the interaction of the elements etc.

Each small cap is around 1-4cm in size and generally ochre coloured with a darker cinnamon brown centre. Over time they will expand to produce a bell-like shape; their colour will fade or become dull, often with a greying (blackening) margin. Also note that, as with many similar of the smaller inkcaps, there are very noticeable grooved markings on the surface, especially nearer to the margin.

The gills are free from the stem and are initially white, maturing to date-brown and eventually black as they turn into an inky liquid (deliquescing) – another common trait of the aptly named Inkcaps.

They are said to be edible, but they don’t seem to be much of a meal to me – or even appealing for that matter! So I haven’t tried to cook and eat any. Please leave a comment on this post if you have indulged – but I can’t imagine there are many recipes out there for them – or maybe there is!

Glistening Inkcap (Coprinellus micaceus) growing in large, densely packed groups feeing off old stumps and dead wood which is sometimes buried beneath the surface.

QUICK ID TABLE: GLISTENING INKCAP Coprinellus micaceus

CAP / FLESH

Ovate (becoming bell-shaped over time). Ochre coloured; darker brown at the centre. Becoming duller with age.

STEM

4-10cm x 0.2-0.5cm. White.

GILLS / SPORE PRINT

Free from stem; initially white, maturing to date-brown, then to black (deliquescing)
Spore Print: Date brown (see how to take a spore print here).

HABITAT / SEASON

On or around broad-leaved tree stumps, dead and/or buried wood. In large groups.
Late spring to early winter.

EDIBILITY

Edible.

The Genus COPRINUS/COPRINELLUS & Related (Inkcaps): Characteristics to look out for:

• Most species gills dissolve into an inky black liquid as the black spores ripen.
• Grow on the ground, wood or dung.
• Often grow in groups (esp. smaller species)
• Smaller species have distinct radial grooved markings on the cap.

Spring finally came, and that extreme winter we’ve just had just wouldn’t let go.

The natural contenders for ‘mushrooms I have to find’ were undoubtedly The Morel and the St.Georges Mushroom. But as yet – no luck on either, even after many outings. Grrrr!

But in the garden and out in force though like some giant family outing, were a selection of the smaller Ink Caps – Fairies Bonnets (or Fairy Inkcap or Trooping Crumble Cap) (Coprinus disseminatus / Coprinellus disseminatus). They come out in their dozens or hundreds even! Very common and quite pretty to look at on the whole. They mass mainly around old stumps of broad-leaved trees and spread to nearby soil.

The caps vary only slightly in colour, from a pale buff brown or clay grey-like colour. They are very fragile and the gills start off white then turn grey-brown and eventually turning black.

Fairies Bonnet is a very apt name for these little beauties

Nearby, milling around in the short grass, I find the Fairy Parasol (or Pelated Ink Cap) (Parasola plicatilis). Again, these are small and fragile, but don’t group in a large troop like our Fairy Bonnet.

This short-lived grassland mushroom has small caps are thin and very ribbed (hence pelated) and are often greyish brown or pale greyish with a darker more brownish central zone. The cap eventually flattens out and shrivels up (within 24 hours) but does not dissolve into a black ink. You will see these in short grass in lots of places from spring to early winter. They also like to grow near woodland herbs.

Pelated Inkcaps have a strongly grooved but delicate cap. They only survive for around 24 hours.

And again we have another common Corpinus family member – The Glistening Ink Cap (Coprinellus micaceus). Definitely the larger and most interesting in this little collective due to the young bell-shaped ochre coloured caps are dusted with glistening, mica-like particles or grains (fairy dust I call it, just to keep us in the fairy theme!). Older specimens slightly curl and split at the cap edge. The gills, common to the ink caps, age from pale buff to brown and eventually black before dissolving into an inky fluid. (That’s when the fairies cry!). The white stems are darker in colour at the base. These are great little mushrooms and one to look out for. They’re about for most of the year, usually in dense groups on broad leaved tree stumps or feeding off dead tree roots.

Shine on! These pics were taken by my dad after maiming them while trimming the grass!

And to sign off, please that these mushrooms are all edible but the stone cold fact is that they are too insubstantial, bland in flavour and poor in texture. Hey ho!

The Genus COPRINUS & Related (Inkcaps): Characteristics to look out for:

• Most species gills dissolve into an inky black liquid as the black spores ripen, Amounts of ink vary.
• Growing on the ground, wood or dung.
• Many young species have woolly veil. Felty scales are often left on the mature specimen.
• Smaller species have distinct radial markings on the cap.

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All that glitters… The Glistening Inkcap

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