horsetail agaric: meaning, definition, pronunciation and examples

Low (Specialist/Biological)
UK/ˈhɔːsteɪl ˌæɡərɪk/US/ˈhɔːrsteɪl əˈɡærɪk/

Technical/Scientific, Naturalist

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Quick answer

What does “horsetail agaric” mean?

A distinctive mushroom species, Coprinus comatus, known for its tall, cylindrical, shaggy cap that deliquesces (liquefies) with age, resembling an inky mass and sometimes a horsetail.

Audio

Pronunciation

Definition

Meaning and Definition

A distinctive mushroom species, Coprinus comatus, known for its tall, cylindrical, shaggy cap that deliquesces (liquefies) with age, resembling an inky mass and sometimes a horsetail.

Refers specifically to the edible, saprotrophic fungus commonly called the 'shaggy mane' or 'lawyer's wig', recognized for its rapid autodigestion which is a key identification feature.

Dialectal Variation

British vs American Usage

Differences

Usage is identical and technical. Common names 'shaggy mane' (more frequent in US) and 'lawyer's wig' (more frequent in UK) are more prevalent in general discourse.

Connotations

Neutral, scientific. The common names ('shaggy mane', 'lawyer's wig') carry slightly more whimsical or descriptive connotations.

Frequency

Extremely low in everyday language. Used primarily in field guides, mycological texts, and by foraging enthusiasts.

Grammar

How to Use “horsetail agaric” in a Sentence

The [adj] horsetail agaric [verbs].

Vocabulary

Collocations

strong
identify the horsetail agaricyoung horsetail agaricedible horsetail agaricCoprinus comatus (horsetail agaric)
medium
a cluster of horsetail agaricsthe deliquescing horsetail agaricforage for horsetail agaric
weak
found a horsetail agaricphoto of a horsetail agaricspecies like the horsetail agaric

Examples

Examples of “horsetail agaric” in a Sentence

verb

British English

  • The specimen began to horsetail agaric, its gills liquefying into an inky mess.

American English

  • If you don't pick them young, they'll completely horsetail agaric by noon.

adverb

British English

  • [Not standard]

American English

  • [Not standard]

adjective

British English

  • We studied the horsetail-agaric lifecycle.

American English

  • He has a horsetail agaric specimen in his collection.

Usage

Meaning in Context

Business

Virtually never used.

Academic

Used in biology, mycology, and environmental science texts.

Everyday

Rare, except among mushroom foragers or gardeners.

Technical

Standard term in mycological field guides and taxonomic descriptions.

Vocabulary

Synonyms of “horsetail agaric”

Strong

shaggy ink cap

Neutral

shaggy manelawyer's wigCoprinus comatus

Weak

inky cap (related group)

Vocabulary

Antonyms of “horsetail agaric”

inedible mushroomtoxic fungusnon-deliquescing agaric

Watch out

Common Mistakes When Using “horsetail agaric”

  • Confusing it with other 'inky cap' mushrooms (e.g., Coprinopsis atramentaria).
  • Using 'horsetail mushroom' ambiguously (could refer to the plant or other fungi).
  • Misspelling as 'horse tail agaric' (should be solid or hyphenated).

FAQ

Frequently Asked Questions

Yes, it is considered a choice edible mushroom but must be consumed very young and fresh, before the gills begin to blacken and liquefy.

The name refers to the visual resemblance of the tall, cylindrical, shaggy cap to the tail of a horse.

Unlike its relative the common ink cap (Coprinopsis atramentaria), the horsetail agaric (Coprinus comatus) does not contain coprine and is not known to cause a disulfiram-like reaction with alcohol.

It is a saprotroph commonly found in grassy areas, lawns, meadows, and on disturbed ground, often appearing in clusters or troops.

A distinctive mushroom species, Coprinus comatus, known for its tall, cylindrical, shaggy cap that deliquesces (liquefies) with age, resembling an inky mass and sometimes a horsetail.

Horsetail agaric is usually technical/scientific, naturalist in register.

Horsetail agaric: in British English it is pronounced /ˈhɔːsteɪl ˌæɡərɪk/, and in American English it is pronounced /ˈhɔːrsteɪl əˈɡærɪk/. Tap the audio buttons above to hear it.

Phrases

Idioms & Phrases

  • [None specific to this term]

Learning

Memory Aids

Mnemonic

Imagine a horse with a shaggy, white tail that slowly melts into black ink – this is the horsetail agaric mushroom.

Conceptual Metaphor

NATURE'S DISAPPEARING ACT / THE MUSHROOM THAT DIGESTS ITSELF

Practice

Quiz

Fill in the gap
The is easily identified by its shaggy, white scales and its tendency to autodigest into black ink.
Multiple Choice

What is the primary defining characteristic of the horsetail agaric?