Leucocoprinus acer
Leucocoprinus acer is a species of mushroom producing fungus in the family Agaricaceae.
Taxonomy
It was first described in 1988 by the mycologist Jörg Raithelhuber who classified it as Leucocoprinus acer.Description
Leucocoprinus acer is a small white dapperling mushroom. Raithelhuber only described the species from a dried specimen and an illustration deposited at the herbarium of the University of Buenos Aires a decade earlier so the description may be incomplete.Cap: 1.5-2.5 cm wide when mature, it starts hemispherical before expanding to convex. The surface is very pale, whitish with a shiny, powdery coating whilst the centre disc has a pale red ochre colour or light chestnut brown in the German description. Stem: 3.5-4.5 cm long and 2-4mm thick with a base that is not bulbous or only slightly bulbous, cylindrical. The Latin diagnosis describes the surface as pale with a red ochre colour at the base whilst the German only says that the stem is light chestnut brown. A stem ring is present and 'distinct' but no further details are supplied. Gills: White, moderately crowded with the attachment described as sinuate to subfree. This would be unusual for a Leucocoprinus species as they are typically free with a collar. Spores: Subglobose or ovoid, smooth with an indistinct germ pore that is not detectable in some spores. Weakly dextrinoid. 8.8-10 x 6.5-7.2 μm. Cystidia: Claviform or truncated. Taste: bitter.
Since many Leucocoprinus species can exhibit a change of colour when dry and as no fresh material was examined to describe this species it is possible that this species may present with different colouration when fresh.