Panaeolus cinctulus (Bolton) Britzelm.

Image location: Belmont-Cragin, Chicago, Illinois, USA

Found in manured soil in a box garden. Physical morphology fits within the extremely variable Panaeolus cinctulus with only a few minor inconsistencies: The pileus seems thinner and does not darken noticeably near the margin, rather it remains watery-striatulate, The lamellae are distinctly reddish brown in immature specimens (will update with photo), and the stipe is a very light tan color beneath the pruinescence and completely lacks longitudinal striations.

Spores 1) 14.33 X 9.97 2) 14.94 X 9.91 3) 14.64 X 10.24 4) 16.12 X 10.21 5) 15.47 X 10.21 6) 15.68 X 9.90 7) 13.84 X 9.88 8) 13.78 X 9.43 9) 14.15 X 10.17 10) 14.09 X 10.18 11) 16.04 X 10.87 12) 15.18 X 10.94 13) 13.79 X 9.79 14) 15.44 X 9.40 15) 15.92 X 10.67 16) 15.40 X 10.13 17) 14.01 X 11.19 18) 15.31 X 10.02 19) 14.02 X 10.89 20) 14.18 X 8.93 21) 14.68 X 9.99 22) 14.49 X 9.61 23) 14.52 X 10.03 24) 14.95 X 10.00 25) 14.60 X 9.35 26) 15.25 X 10.87 27) 14.46 X 9.53 28) 13.53 X 10.10 29) 14.75 X 9.67 30) 15.11 X 10.13

Range(13.78) 16.12 X 11.19 (8.93) Avg= 14.75 X 10.07 Q range- 1.44-1.5 Q= 1.46 Solid black en masse, conspicuously asperulate. Germ pore is mostly apical in side view, Less frequently oblique, Basidia are all 4 sterigma.

Cheilocystidia 1) 32.45 X 12.54 2) 39.57 X 17.31 3) 38.39 X 9.83 4) 33.69 X 14.15 5) 42.58 X 12.94 6) 42.48 X 13.61 7) 37.80 X 11.29 8) 39.94 X 12.10 9) 39.58 X 11.62 10) 36.04 X 9.99 11) 41.48 X 12.49 12) 39.02 X 15.15

Range-(32.45)42.58 X 15.15(9.83) avg- 38.5 X 12.75 Q range- 3.3-2.8 Q- 3 Ranging from flexuous cylindric-clavate to narrowly utriform to utriform with an obtuse apex.

Epicutis cell width 1) 16.02 X 15.91 2) 19.59 X 18.40 3) 16.40 X 15.97 4) 18.65 X 18.49 5) 20.11 X 14.56 6) 19.23 X 14.99 8) 22.02 X 19.13 9) 22.08 X 19.53 10)25.57 X 15.85 11)21.32 X 16.48

Range-(16.02)25.57 X 19.53(14.56) Avg-20.09 X 16.93 Q range- 1.3-1.1 Q- 1.2

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