Notes:
Growing abundantly in mulch among Rhus aromatica behind Townshend Hall. Annulus lacking. Veil remants on cap margins. Caps without separable pellicles. Odor not distinctive. All structures inamyloid. Monomitic with at least some clamps present. Pileipellis composed of encrusted hyphae. Pleurocystidia absent. Cheilocystidia abundant, mostly ventricose mucronate. Cheilocystidia measurements from Piximetre: (21.5) 22.1 – 28.1 (28.8) × (7.5) 8.4 – 9.3 (9.5) µm, Q = (2.3) 2.5 – 3.2 (3.7); N = 15, Me = 24.9 × 8.8 µm; Qe = 2.8
Individual cheilocystidia: 23.45 × 9.19 µm, 28.11 × 7.53 µm, 23.76 × 9.20 µm, 25.89 × 8.06 µm, 21.89 × 8.99 µm, 24.48 × 9.49 µm, 26.95 × 9.12 µm, 22.28 × 8.90 µm, 22.10 × 8.67 µm, 22.89 × 9.29 µm, 28.84 × 9.39 µm, 25.76 × 8.43 µm, 21.51 × 9.34 µm, 27.15 × 8.54 µm, 28.18 × 8.60 µm
Basidia 4-sterigmate. Spores brown and subrhomboid in face view. Spore measurements from Piximetre: (5.3) 5.4 – 7.4 (7.6) × (2.8) 3.3 – 4.1 (4.3) µm, Q = (1.4) 1.5 – 1.9 (2.1); N = 30, Me = 6.3 × 3.6 µm; Qe = 1.7
Individual spores: 7.40 × 3.53 µm, 6.73 × 3.35 µm, 6.55 × 3.58 µm, 5.30 × 3.67 µm, 5.49 × 3.78 µm, 6.71 × 4.34 µm, 6.52 × 3.53 µm, 5.85 × 3.81 µm, 5.60 × 3.74 µm, 5.94 × 3.14 µm, 6.39 × 3.79 µm, 5.69 × 3.33 µm, 7.27 × 3.89 µm, 6.81 × 3.67 µm, 5.40 × 3.20 µm, 5.32 × 3.47 µm, 5.40 × 3.33 µm, 5.86 × 3.68 µm, 6.26 × 3.52 µm, 7.36 × 3.80 µm, 5.40 × 2.85 µm, 6.09 × 3.39 µm, 6.09 × 3.57 µm, 7.63 × 4.08 µm, 6.80 × 3.91 µm, 5.92 × 3.28 µm, 6.63 × 4.16 µm, 5.83 × 3.59 µm, 7.49 × 3.85 µm, 6.54 × 4.24 µm

Species Lists

Images

20181016_112121 crop.jpg
DSC_0848 Gill edge at 100x in Melzers.JPG
DSC_0852 Gill edge at 400x showing spores (some attached to basidia) and cheilocystidia at 400x in Melzers.JPG
DSC_0860 Gill edge showing spores and cheilocystidia at 400x in Melzers.JPG
DSC_0866 Gill edge at 400x in Melzers showing cheilocystidia.JPG
DSC_0883 Gill edge showing spores, cheilocystidia and generative hyphae at 400x in Melzers.JPG
DSC_0894 Clamped generative hyphae in the pileipellis at 400x in NH4OH (2 drops), phloxine (1 drop) and congo red (1 ...

Proposed Names

-29% (1)
Used references: Guzmán, G. (1983). The genus Psilocybe: a systematic revision of the known species including the history, distribution and chemistry of the hallucinogenic species (No. 74). J. Cramer.
Guzmán, G. (1995). Supplement to the monograph of the genus Psilocybe. Taxonomic monographs of Agaricales. Bibliotheca Mycologica, 159, 91-141.
Singer, R. (1989). New taxa and new combinations of Agaricales (Diagnoses fungorum novorum Agaricalium IV). Fieldiana: Botany New Series, 21, 1-133.
https://web.archive.org/...
Based on microscopic features
57% (1)
Recognized by sight: Not a very good match for the single Deconica xeroderma ITS sequence on Genbank. Appears to be a taxon also found in Tennessee
Used references: BLAST results
92% (2)
Recognized by sight: "Currently, D. cokeriana is only known from the eastern USA, specifically from Connecticut, Georgia, Ohio, and Tennessee. The report from Ohio was made by Django Grootmyers as Deconica [Mushroom Observer, Observation # 340420; Miami University, Willard Sherman Turrell Herbarium (MU–000292853); Genbank MK607606], being its sequence almost identical with the ones sequenced here. "
Used references: Ramírez-Cruz V, Cortés-Pérez A, Borovička J, Villalobos-Arámbula AR,
Matheny PB, Guzmán-Dávalos L, Deconica cokeriana (Agaricales, Strophariaceae), a new combination,
Mycoscience (2019), doi: https://doi.org/10.1016/j.myc.2019.07.001.

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= Observer’s choice
= Current consensus

Comments

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Nice find!
By: PinkNightmares
2019-01-10 13:35:03 MST (-0700)

Created: 2018-10-22 10:16:07 MDT (-0600)
Last modified: 2019-08-04 19:59:45 MDT (-0600)
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