Blue Roundhead - Stropharia cyanea
Stropharia cyanea (Strophariaceae) is a blue mushroom found in Europe and in Washington State, probably widespread in the Northwest. It has bluish green to yellow-green caps, soon discolored to pale straw yellow with only hint of green.
This species has long been confused with Stropharia aeruginosa, which is more strongly colored blue-green and has a copious white veil and white then darker, purple-brown gills. Some authors consider the species Stropharia cyanea is synonymous with Stropharia caerulea.
Together with other fungi in the genus Stropharia, the Blue Roundhead is inedible.
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Photo credit: ©Erminio Ferrari
Locality: S. Maria Maggiore, Valle Vigezzo, Piemonte, Italia.