Observation 171594: Astraeus hygrometricus (Pers.) Morgan

When: 2014-07-22

Collection location: Lowndes Co., Georgia, USA [Click for map]

Who: vsumycologylab

No specimen available

Habitat: Found among grass underneath a tree.

Notes: Fruiting body is 3.81cm and spore mass is 2.54cm wide. No stipe present. Peridium spore mass surrounded by 7 star rays, rays are darker grey to becoming white. Peridium is greyish white with a single ostiole at the top. Found growing in cluster in sandy soil. Interior surface of star rays are cracked like a dry river bed. Gasteroid body form.

Rationale for ID: This specimen was determined to be Astraeus hygrometricus because of habit, fruiting body, and spores. Microscopic examination of the spores indicated they were roughly 10 micrometers, distinctly brown in color, and warty. Further examination of the fruiting body revealed a powdery spore mass with a dark brown color. Star rays resemble that of the rays found on cotton stalks, hygroscopic, and cracking. Rays varied from being completely off the rounded peridium to still encompassing it. Ray length is between 2-3cm long and 1cm wide.

Proposed Names

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Used references: Mushroom Demystified

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Created: 2014-07-29 06:36:44 CEST (+0200)
Last modified: 2014-07-29 11:09:21 CEST (+0200)
Viewed: 11 times, last viewed: 2017-06-18 19:34:41 CEST (+0200)
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