Notes:
Growing on the side of a fallen tulip tree (?). No veil of any sort. All parts dry. Odor indistinct. Caps hygrophanous: fading to lighter brown. Spore print dull brown. Pileipellis composed primarily of rounded spores. Encrusted metuloid pleurocystidia (lamprocystidia) abundant. Pleurocystidia measurements from Piximetre: (23.6) 29.2 – 35.8 (37.2) × (6.8) 7.9 – 10.3 (32.7) µm, Q = (1.1) 2.9 – 4.2 (5.2); N = 23, Me = 32.1 × 10 µm; Qe = 3.5
Individual pleurocystidia: 29.89 × 10.30 µm, 35.47 × 6.78 µm, 29.36 × 8.57 µm, 29.22 × 9.86 µm, 33.14 × 10.19 µm, 31.98 × 9.17 µm, 29.45 × 8.84 µm, 34.92 × 8.37 µm, 32.70 × 7.66 µm, 35.82 × 8.89 µm, 32.08 × 8.92 µm, 32.68 × 10.34 µm, 34.89 × 32.68 µm, 34.89 × 8.37 µm, 35.83 × 10.13 µm, 30.95 × 9.46 µm, 34.11 × 9.01 µm, 31.49 × 8.62 µm, 35.33 × 8.47 µm, 24.42 × 7.94 µm, 23.61 × 8.92 µm, 29.77 × 9.65 µm, 37.21 × 9.26 µm
Walls of pleurocystidia up to 4.08 µm thick (19 measured). Cheilocystidia of 2 types: 1 seemingly identical to the pleurocystidia and 1 thin-walled and with rounded apices. Basidia 4-sterigmate. Spore measurements from Piximetre: (4.5) 5 – 5.9 (6.2) × (3.2) 3.3 – 4 (4.2) µm, Q = (1.3) 1.4 – 1.6 (1.8); N = 30, Me = 5.5 × 3.7 µm; Qe = 1.5
Individual spores: 6.12 × 4.20 µm, 5.78 × 3.47 µm, 5.69 × 4.09 µm, 5.56 × 3.82 µm, 5.94 × 3.80 µm, 5.69 × 3.80 µm, 6.00 × 3.94 µm, 5.51 × 3.83 µm, 5.72 × 3.71 µm, 4.99 × 3.29 µm, 5.80 × 3.77 µm, 5.18 × 3.38 µm, 6.19 × 3.37 µm, 5.35 × 3.17 µm, 5.04 × 3.48 µm, 5.15 × 4.03 µm, 5.42 × 3.67 µm, 5.01 × 3.65 µm, 5.33 × 3.29 µm, 5.32 × 3.61 µm, 5.45 × 3.76 µm, 4.52 × 3.29 µm, 5.20 × 3.98 µm, 5.45 × 3.67 µm, 5.40 × 3.65 µm, 5.75 × 3.60 µm, 5.63 × 3.68 µm, 5.55 × 3.59 µm, 5.65 × 3.54 µm, 5.53 × 3.53 µm

Species Lists

Images

2019-01-16-10.53.12 ZS DMap.jpg
20171106_225854.jpg
DSC_8650.JPG
DSC_8684.JPG
20171112_213148 crop.jpg
Faded caps
DSC_9627 Spores at 400x in NH4OH (2 drops), congo red (1 red) and phloxine (1 drop).JPG
DSC_9629 Cheilocystidia and spores at 400x in NH4OH (2 drops), congo red (1 red) and phloxine (1 drop.JPG
DSC_9638 Cheilocystidia and spores at 400x in NH4OH (2 drops), congo red (1 red) and phloxine (1 drop).JPG
DSC_9646 Pleurocytidia and spores at 400x in NH4OH (2 drops), congo red (1 red) and phloxine (1 drop).JPG
DSC_9649 Basidia, pleurocystidia and spores at 400x in NH4OH (2 drops), congo red (1 red) and phloxine (1 drop).JPG
DSC_9668 Pileipellis at 400x in NH4OH (2 drops), congo red (1 red) and phloxine (1 drop).JPG

Proposed Names

-57% (1)
Used references: Largent, D. L., & Baroni, T. J. (1988). How to Identify Mushrooms to Genus VI: The Modern Genera (Vol. 6). Mad River PressInc.
Chicago
57% (1)
Used references: Largent, D. L., & Baroni, T. J. (1988). How to Identify Mushrooms to Genus VI: The Modern Genera (Vol. 6). Mad River Press Inc.
Smith, A. H. (1972). The North American species of Psathyrella. Memoirs of the New York Botanical Garden 24: 1-633.
Örstadius, L., Ryberg, M., & Larsson, E. (2015). Molecular phylogenetics and taxonomy in Psathyrellaceae (Agaricales) with focus on psathyrelloid species: introduction of three new genera and 18 new species. Mycological progress, 14(5), 25.
Based on microscopic features

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Created: 2017-11-14 01:10:20 MST (-0700)
Last modified: 2019-01-16 13:46:40 MST (-0700)
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