Leucocoprinus flavescens

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Leucocoprinus flavescens
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Fungi
Division: Basidiomycota
Class: Agaricomycetes
Order: Agaricales
Family: Agaricaceae
Genus: Leucocoprinus
Species:
L. flavescens
Binomial name
Leucocoprinus flavescens
(Morgan) H.V. Sm. (1981)
Synonyms

Lepiota flavescens Morgan (1907)

Leucocoprinus flavescens
Information icon.svg
Gills icon.png Gills on hymenium
Campanulate cap icon.svgUmbonate cap icon.svg Cap is campanulate or umbonate
Free gills icon2.svg Hymenium is free
Ring stipe icon.svg Stipe has a ring
Transparent spore print icon.svg
Spore print is white
Saprotrophic fungus.svgEcology is saprotrophic
Mycomorphbox Question.pngEdibility is unknown

Leucocoprinus flavescens is a species of mushroom-producing fungus in the family Agaricaceae. [1] [2]

Contents

Taxonomy

It was first described in 1907 by the American mycologist Andrew Price Morgan who classified it as Lepiota flavescens [3] and reclassified as Leucocoprinus flavescens by the American botanist and mycologist Helen Vandervort Smith in 1981. [4]

Description

Leucocoprinus flavescens is a small mushroom with very thin white to pale yellow flesh.

Cap: 1–2.5cm or up to 4cm at the extreme. Ovoid to campanulate (bell shaped) with an umbo before flattening or becoming convex with age. The surface is pale greenish-yellow and is covered in fine powdery scales with smooth striations whilst the central disk is brownish but smooth. Stem: 2–6 cm and 1–2 mm in thickness with a slightly swollen base of 3–5 mm thick where white mycelium may be present. The stem surface is pale sulphur-yellow and is likewise covered with fine powdery scales like the cap though these may disappear with age leaving the stem smooth and it sometimes discolours reddish-brown. The fragile stem ring is pale yellow and located towards the top of the stem (superior) but it may disappear. Gills: Free, close and yellowish. Spore print: White. Spores: Ellipsoid, smooth. 4.8–6.6 (7.2) × (3.5) 4.9–5.5 μm. Taste: Bitter. Smell: Indistinct. [5] [4]

Habitat and distribution

In a 1907 study Morgan documented Lepiota flavescens growing on the ground under Robinia and Gleditsia trees in Southern Ohio [3] whereas Smith documented the species from greenhouses in Southern California and Massachusetts. [4] It has also been documented in Illinois [5] and in 2010 it was recorded in Washington state where it was found growing in large clusters in a covered outdoors container filled with potting soil intended for a greenhouse. [6]

L. flavescens is not very well known and not often recorded. It is likely that it is often misclassified as other Leucocoprinus species which are simply more well known or more commonly suggested by identification algorithms used by the public such as iNaturalist. The limited number of observations which have been made suggest the species is uncommon but that it has a widespread distribution in the United States with observations also made in Costa Rica. [7]

Similar species

References

  1. "Species fungorum – Leucocoprinus flavescens (Morgan) H.V. Sm., The Michigan Botanist 20(2): 50 (1981)". www.speciesfungorum.org. Retrieved 2022-07-19.
  2. "Mycobank Database – Leucocoprinus flavescens".
  3. 1 2 Morgan, A. P. (1907). "North American Species of Lepiota (Concluded)" . The Journal of Mycology. 13 (1): 5. doi:10.2307/3752459. ISSN   1052-0368. JSTOR   3752459 via www.jstor.org.
  4. 1 2 3 Smith, Helen V. (1981). "Some Species of Leucocoprinus which Grow in Greenhouses". Michigan botanist. National Agricultural Library U. S. Department of Agriculture. Ann Arbor : Michigan Botanical Club. p. 50.{{cite book}}: CS1 maint: publisher location (link)
  5. 1 2 Kuo, M. (August 2015). "Leucocoprinus flavescens (MushroomExpert.Com)". www.mushroomexpert.com. Retrieved 2022-07-08.
  6. Birkebak, Joshua M. (2010-06-24). "The genus Leucocoprinus in western Washington". Mycotaxon. 112 (1): 83–102. doi: 10.5248/112.83 . ISSN   0093-4666.
  7. "Leucocoprinus flavescens (Morgan) H.V.Sm". www.gbif.org. Retrieved 2022-08-07.
  8. Kuo, M. (August 2015). "Leucocoprinus flavescens (MushroomExpert.Com)". www.mushroomexpert.com. Retrieved 2022-10-12.