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Conical Brittlestem (Psathyrella conopilus)

Conical Brittlestem

Safe

Psathyrella conopilus

Also known as: Conical Mottlegill

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Description

Psathyrella conopilus is a common and widespread saprobic mushroom characterized by its distinctly conical cap, slender stem, and brittle flesh. It is often found in grassy areas, gardens, and disturbed ground, particularly after rain. Its ephemeral nature and delicate structure are typical of the genus Psathyrella.

How to Identify

Cap
The cap is typically 2-6 cm in diameter, acutely conical to campanulate (bell-shaped), often retaining a pointed umbo. The color varies from dark brown to reddish-brown when moist, fading to pale buff or grayish-tan when dry (hygrophanous). The margin is often striate when moist and may be slightly incurved when young, becoming straight with age. The surface is smooth, sometimes finely pruinose when young.
Gills
The gills are adnate to adnexed, crowded, and narrow. They are initially pale grayish-brown, becoming dark purplish-brown to blackish with age due to the maturing spores. There are numerous lamellulae (short gills).
Stem
The stem is 5-15 cm long and 0.2-0.6 cm thick, very slender, hollow, and brittle. It is whitish to pale brownish, often darkening towards the base. The surface is smooth or finely pruinose, especially towards the apex. There is no ring or volva.
Flesh
The flesh is very thin, fragile, and whitish to pale brownish. It has no distinctive odor or taste.
Fruiting body
The fruiting body is delicate and brittle, typical of the Psathyrella genus. It is characterized by a conical cap and a slender, often tall stem.
Habitat
Saprobic, growing on decaying wood (often buried), wood chips, leaf litter, or rich soil. It is commonly found in lawns, gardens, parks, roadsides, and disturbed areas, often in scattered groups or singly.

Key Facts

  • Cap surfaces: Smooth, hygrophanous, often striate at margin when moist.
  • Growth Form: Scattered, gregarious, or solitary.
  • Spore Print: Dark purplish-brown to blackish.
  • Body color: Cap: Dark brown to reddish-brown (moist), fading to pale buff/grayish-tan (dry). Stem: Whitish to pale brownish.
  • Odor: Indistinct.
  • Flesh bruises: Does not bruise.
  • Height: 5-15 cm
  • Cap Diameter: 2-6 cm
  • Nutrient gathering: Saprobic

Safe

Safe

Psathyrella conopilus is generally considered inedible due to its small size, fragile nature, and lack of culinary value. While not known to be toxic, it is not recommended for consumption. There are no reports of specific toxins, but consumption of wild mushrooms without positive identification by an expert is always risky. Many small brown mushrooms (LBMs - 'Little Brown Mushrooms') can be difficult to distinguish and some are poisonous.

Toxin Type: None known, but not recommended for consumption.Reaction Type: None known

Quick Check

  • Odor: Indistinct
  • Fruiting: Spring to autumn, sometimes into early winter in milder climates.
  • Substrate: Decaying wood (often buried), wood chips, leaf litter, rich soil.

Where to Find

Europe

Widespread across temperate regions of Europe.

North America

Common throughout North America, particularly in eastern and western regions.

Asia

Reported from various parts of Asia, though less extensively documented than in Europe and North America.

Australia and New Zealand

Also found in parts of Australasia.

Finding Tips

Look in disturbed areas

This mushroom frequently appears in lawns, gardens, parks, and along roadsides where there is decaying organic matter or buried wood.

Check after rain

Like many Psathyrella species, P. conopilus is hygrophanous and often fruits in flushes after periods of rain, especially during spring, summer, and autumn.

Examine wood debris

While it can appear to grow from soil, it is often associated with buried wood or wood chips, so check areas with such debris.

Similar Species

Common Brittlestem

Psathyrella

Also known as: Psathyrella candolleana

Glistening Inkcap

Coprinellus

Also known as: Coprinellus micaceus

Fairy Inkcap

Coprinellus

Also known as: Coprinellus disseminatus

Scientific Classification

Phylum
Basidiomycota
Class
Agaricomycetes
Order
Agaricales
Family
Psathyrellaceae
Genus
Psathyrella

Storage Information

  • Max Temperature: Not applicable
  • Freezing duration: Not applicable
  • Min Temperature: Not applicable
  • Refrigeration: Not applicable

How to Clean

Not applicable, as this mushroom is not considered edible.

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