Leucocoprinus martinicensis

[4] Pegler states that the species may have been recorded in 1851 from Costa Rica by Elias Magnus Fries as Agaricus (Hiatula) crenulatus.

[6][7] The correct spelling of the name is Agaricus (Hiatula) crenulata and since the description of this species is very similar, it can be assumed that this is what Pegler intended to compare it to.

[8] Leucocoprinus martinicensis is a small dapperling mushroom with thin, unchanging yellowish white flesh that may be up to 1.5mm thick at the cap disc.

Cap: 3.5-7cm wide, starting conical or campanulate (bell shaped) before flattening with a shallow depression around the small umbo.

Stem: 7.7-13 cm long and 3.5-8mm thick tapering slightly from the club shaped base where white mycelium is present.