Astraeus hygrometricus has been widely reported from North America. However, recent studies have revealed new species of Astraeus in North America with similar features (e.g., Astraeus smithii and Astraeus morganii; Phosri et al. 2013, IMA Fungus 4: 347–356.). In addition, these studies suggested that Astraeus hygrometricus may not occur in North America. In light of these studies, it is not yet clear which species of Astraeus occur in Maryland.
The rays surrounding the fruiting body are hygroscopic, expanding and contracting with the weather conditions (L. Biechele, pers. comm.).
Astraeus hygrometricus can be found in sandy, relatively open soil.
There are 29 records in the project database.
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