Leucocoprinus birnbaumii (Corda) Singer

Filed As

Agaricaceae
Leucocoprinus birnbaumii (Corda) Singer

Collector(s)

B. Bomanz 117, 10 Aug 2014

Location

United States of America. Missouri. Saint Louis Co. Town & Country. Town & Country Crossing.

Habitat

parking lot planting area. Moisture conditions: moist. wood mulch.

Description

spore length: 9 - 11 microns; spore width: 6.5 - 8 microns; spore shape: elliptical with an apical pore, thick-walled; spore texture: smooth; spore color: clear; spore print color: white. Fruit bodies of Leucocoprinus birnbaumii were agaricoid (mushroom-shaped) and occured singly and in small clumps. All parts were bright, pale sulphur-yellow, but faded with age. When young, the cap was taller than broad, later becoming convex and around 20–60 mm (1–2.5 in) across. The cap surface was smooth but dotted with fine, easily detached scales, and developed shallow, radial grooves near the margin. The gills were free (not attached to the stem) and were covered by a partial veil when young, which ruptured to leave a fragile, evanescent ring on the stem. Microscopically, the specimen has thick-walled, ellipsoid spores, has a germ pore, and measures 9–11 by 6.5–8 µm. Close examination by Dr. Methven (see annotation above) combined with the 2015 DNA analysis confirmed that this specimen is Leucocoprinus birnbaumii.

Identifiers

NY Barcode: 03817623

Occurrence ID: a005df27-170d-4f51-b29f-db107cf35338

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