Girish Mahajan (Editor)

Panaeolina castaneifolia

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Kingdom
  
Fungi

Class
  
Agaricomycetes

Family
  
Bolbitiaceae

Scientific name
  
Panaeolina castaneifolia

Division
  
Basidiomycota

Order
  
Agaricales

Genus
  
Panaeolus

Rank
  
Species

Similar
  
Panaeolus africanus, Psilocybe guilartensis, Psilocybe mescaleroensis, Gymnopilus viridans, Panaeolus bisporus

Panaeolina castaneifolia is a rare and widely distributed little brown mushroom.

Contents

It has dark brown, coarsely roughened spores which resemble those of Panaeolina foenisecii.

Description

  • Cap: 2 – 4 cm, often with small wrinkles, hygrophanous, dark brown when moist drying to ochre buff. Often with a darker zone around the margin as it dries.
  • Gills: Broad, not crowded, adnexed, dark brown.
  • Stipe: 4 – 6 cm x 4 – 6 mm, pruinose, cartilaginous, the same color as the cap or pale ochre.
  • Spores: Dark purplish brown, rough. 12 — 16 x 7 — 9 micrometers, almond shaped, verrucose, with small germ pore.
  • Odor: Rather strong.
  • Taste: Unpleasant.
  • Microscopic features: Basidia four spored, pleurocystidia look like basidia and are dark brown, cheilocystidia abundant, fusoid-ventricose or subcylindric.

    • Habitat and formation

    Panaeolina castaneifolia grows in along roadsides and grassy fields. This species was first found in New York City and is probably more widely distributed. This mushroom is often mistaken for Panaeolina foenisecii, and has similar microscopic features but can be distinguished by its thicker stem and more unpleasant taste. It also resembles Panaeolus subbalteatus and can be distinguished from that species by its roughened brown spores.

    References

    Panaeolina castaneifolia Wikipedia
    (Text) CC BY-SA