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Pileus: (3) - (57)mm, hemispheric when young, rarely subplane in age, hygrophanous, staining strongly bluish. gills attached, sets of short gills of differing lengths.

Stipe: exannulate, staining bluish to blackish, hollow in age, base strongly rhizomorphic.

Spores: ellipsoid to mango shaped (9.2)10-13(14.6) x 5.7-7.3(9.7) microns. dark purple-brown in deposit.

Cheilocystidia: 19-31 x 5.3-8.6 microns occasionally bifurcate, very rarely trifurcate.

Pleurocystidia: absent or very rare. a few bifurcate structures observed that might be pleurocystidia.

Basidia: 26-32 microns. all basidia appear to be 4 spored.

Bioassay: strongly active.

Found under a holly bush in man-made mulch at the edge of a lawn. The spores are slightly larger than what has previously been described for Psilocybe baeocystis.

Microscopy photos by Alan Rockefeller. Additional microscopic measurements and photos by Workman (sporeworks) in 2007.