Leucocoprinus birnbaumii
| Leucocoprinus birnbaumii | |
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| Leucocoprinus birnbaumii in flowerpot | |
| Scientific classification | |
| Kingdom: | Fungi |
| Division: | Basidiomycota |
| Class: | Agaricomycetes |
| Order: | Agaricales |
| Family: | Agaricaceae |
| Genus: | Leucocoprinus |
| Species: | L. birnbaumii |
| Binomial name | |
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Leucocoprinus birnbaumii (Corda) Singer (1962) |
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| Synonyms | |
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Species synonymy
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| Leucocoprinus birnbaumii | |
|---|---|
| Mycological characteristics | |
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gills on hymenium |
 
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cap is ovate or campanulate |
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hymenium is free |
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stipe has a ring |
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spore print is white |
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ecology is saprotrophic |
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edibility: poisonous |
Leucocoprinus birnbaumii is a species of gilled mushroom in the family Agaricaceae. It is common in the tropics and subtropics, but in temperate regions frequently occurs in greenhouses and flowerpots, hence its common names of flowerpot parasol and plantpot dapperling. The fruit bodies are poisonous, if consumed.
cap is ovate
The species was first published as Agaricus luteus by the English mycologist James Bolton who described and illustrated it from a hothouse near Halifax in 1785. Unfortunately, the name A. luteus had already been published for a different fungus, making Bolton's A. luteus illegitimate. Nonetheless, many popular North American books continued to use the name Lepiota lutea until the 1980s. In 1839 Czech mycologist August Corda described the same species from Prague where it was found growing in a greenhouse by a garden inspector named Birnbaum, hence the epithet birnbaumii.
In the UK, Leucocoprinus birnbaumii has been given the recommended common name of "plantpot dapperling". In North America, it has also been called the "yellow parasol", "flowerpot parasol", "yellow houseplant mushroom", "lemon-yellow lepiota", or "yellow pleated parasol".
Fruit bodies of Leucocoprinus birnbaumii are agaricoid (mushroom-shaped) and occur singly or in small clumps. All parts are bright, pale sulphur-yellow, but fade with age. When young, the cap is usually taller than broad, later becoming convex and around 20–60 mm (1–2.5 in) across. The cap surface is smooth but dotted with fine, easily detached scales, and often develops shallow, radial grooves near the margin. The gills are free (not attached to the stem) and are covered by a partial veil when young, which ruptures to leave a fragile, evanescent ring on the stem. Microscopically, the species is distinguished by its thick-walled, ellipsoid spores that are dextrinoid, have a germ pore, and measure around 8–12 by 5–9 μm.
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Wikipedia