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Barometer earthstars
1 species
Earthstar-like, ectomycorrhizal fungi related to the boletes, with hygroscopic rays that close over the spore case in dry weather and open when wet. The genus is widespread in temperate and tropical regions, and its species limits have been revised using DNA.
Spore case papery, opening by an apical tear; outer layer split into thick hygroscopic rays; spores large, globose and spiny; spore mass brown.
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