Leucocoprinus nanianae

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Leucocoprinus nanianae
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Fungi
Division: Basidiomycota
Class: Agaricomycetes
Order: Agaricales
Family: Agaricaceae
Genus: Leucocoprinus
Species:
L. nanianae
Binomial name
Leucocoprinus nanianae
Bouriquet (1946)
Leucocoprinus nanianae
Information icon.svg
Gills icon.png Gills on hymenium
Convex cap icon.svgFlat cap icon.svg Cap is convex or flat
Free gills icon2.svg Hymenium is free
Ring stipe icon.svg Stipe has a ring
Transparent spore print icon.svg
Transparent spore print icon.svg
 Spore print is cream to white
Saprotrophic fungus.svgEcology is saprotrophic
Mycomorphbox Question.pngEdibility is unknown

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

Contents

Taxonomy

It was first described in 1946 by the French mycologist Gilbert Bouriquet who classified it as Leucocoprinus nanianae. [3] This species is currently accepted [1] but appears to have received no attention since and may have simply been forgotten about as the publication in which it was described, Bulletin l’Académie Malgache, Nouvelle série, tome 25 is rare and contains many other species for which there is no information available.

Description

Leucocoprinus nanianae is a large white dapperling mushroom with white flesh. The description for this species very closely matches that of Leucocoprinus cretaceus and it is possible that it is simply a synonym.

Cap: Starts globular before spreading out and expanding to 15cm wide, without an umbo. The surface is white and powdery or floury with some small bunches of fibrils that are coloured very light brown. The illustration for this species shows some yellowing at the centre disc and possibly at the gills where they meet the stem although this is not described in the text. Stem: 15cm long and 15mm thick with a bulbous base. The surface is white and covered in a powdery coating the same as the cap, it is flexible when mature and hollows with age but when immature the stem is in the shape of an elongated bulb. No details of the stem ring are noted besides that it is well developed however the accompanying illustration shows a large ring above the middle of the stem or towards the top (apical to superior). Gills: Free, crowded and cream coloured. Spore print: Very light creamy white. Spores: 8.5-12.25 x 5.5-8.5 μm. Dextrinoid. Guttulate with a thick membrane and large germ pore, very very pale yellow. Smell: Pleasant. Taste: Pleasant. [3]

Habitat and distribution

The specimens studied by Bouriquet were found growing in a large cluster on an old pile of garbage near the agricultural station of Nanisana in Madagascar during December of 1942. [3] What this 'garbage' consisted of is not specified and it is possible that Bouriquet may have been describing a compost heap at the agricultural station. L. cretaceus and other Leucocoprinus species are very versatile saprotrophs which are capable of growing on many different substrates so compost, manure, plant debris or wood are all possible.

GBIF has no recorded observations for this species. [4]

Etymology

L. nanianae was presumably named for the location in which it was found, Nanisana, Madagascar. The accompanying illustration for this species created by Mare Rabarijaona is captioned 'Leucocoprinus Nanisanae' [3] so it is unclear which name was intended and which was in error.

Edibility

Bouriquet fed 400g of cooked mushroom to an 'average weight dog' and noted that it did not cause any trouble. [3] This of course cannot be assumed as ensuring the mushroom is safe for human consumption however it was also noted that some of the natives considered the mushroom edible. [3]

Similar species

Leucocoprinus cretaceus and Leucocoprinus elaeidis are described similarly and mostly only differ in the noted presence of a yellow or light brown colour accenting the otherwise white, powdery surface. L. elaeidis is also only documented in one old book and it is possible that it and L. nanianae are simply synonyms of L. cretaceus that have yet to be reclassified. L. cretaceus is the only routinely documented Leucocoprinus species that resembles this description and some observations of it display some yellow or brown discolouration at the cap or a yellow stem beneath the white scales. At present it is not clear if these are all the same species or if some distinction should be made based on these characteristics.

Related Research Articles

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Leucocoprinus birnbaumii, commonly known as the flower pot parasol, yellow parasol, flowerpot parasol, or plantpot dapperling, is a species of gilled mushroom in the family Agaricaceae. It is common in the tropics and subtropics. However, in temperate regions, it frequently occurs in greenhouses and flowerpots, hence its common names of flowerpot parasol and plantpot dapperling. It is considered to be toxic if consumed.

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References

  1. 1 2 "Species fungorum - Leucocoprinus nanianae Bouriquet, Bull. Acad. malgache 25: 16 (1946)". www.speciesfungorum.org. Retrieved 2022-07-19.
  2. ↑ "Mycobank Database - Leucocoprinus nanianae".
  3. 1 2 3 4 5 6 Bourniquet, Gilbert (1943). "Champignons Nouveaux de Madagascar". Bulletin de l'Académie Malgache. 25: 16.
  4. ↑ "Leucocoprinus nanianae Bouriquet". Global Biodiversity Information Facility. Retrieved 2022-10-25.
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