Notes:
Growing on the side of a Quercus log near Quercus sp. and Fagus grandifolia. Other ECM trees may have been present in the area. Monomitic with simple-septate generative hyphae. Subicular hyphae dark brown. Basidia 4-sterigmate. Basidia measurements from Piximetre: 43 – 70.3 × (7.2) 7.25 – 8.8 µm, Q = 4.9 – 8.66 (8.7); N = 4, Me = 51.2 × 8 µm; Qe = 6.4
Individual basidia: 44.18 × 7.25 µm, 42.99 × 8.80 µm, 47.33 × 7.84 µm, 70.30 × 8.12 µm
Sterigmata up to 10.01 µm long (5 measured). Spines up to 1.37 µm long (5 measured). Spore measurements from Piximetre: (7.3) 7.5 – 8.4 (8.8) × (6) 6.5 – 7.4 (7.7) µm, Q = (1) 1.1 – 1.3 (1.4); N = 30, Me = 8 × 6.9 µm; Qe = 1.2
Individual spores: 7.86 × 6.71 µm, 8.41 × 6.09 µm, 7.52 × 7.04 µm, 7.41 × 6.59 µm, 8.13 × 7.44 µm, 8.25 × 5.96 µm, 7.99 × 7.25 µm, 8.05 × 6.99 µm, 7.53 × 7.16 µm, 8.21 × 7.22 µm, 7.74 × 6.60 µm, 8.25 × 6.84 µm, 7.62 × 7.34 µm, 7.53 × 7.18 µm, 8.09 × 7.09 µm, 7.35 × 6.69 µm, 7.73 × 7.16 µm, 8.82 × 6.87 µm, 7.98 × 6.91 µm, 8.73 × 6.76 µm, 7.39 × 7.00 µm, 8.24 × 7.70 µm, 8.03 × 7.41 µm, 8.78 × 6.52 µm, 8.33 × 7.11 µm, 8.02 × 6.25 µm, 7.77 × 6.78 µm, 8.41 × 7.32 µm, 7.74 × 7.63 µm, 8.19 × 6.53 µm

Species Lists

Images

2018-08-04-00.25.17 ZS DMap edit crop.jpg
20180722_110016.jpg
20180722_112110.jpg
DSC_4986 40x in 1M KOH.JPG
DSC_4991 100x in 1M KOH.JPG
DSC_4998 Spores and basidia at 400x in 1M KOH.JPG
DSC_4999 Spores, basidia and simple-septate generative hyphae at 400x in 1M KOH.JPG
DSC_5019 Subicular hyphae and other structures at 400x in 1M KOH.JPG

Proposed Names

-29% (1)
Used references: Larsen, M. J. (1969). Tomentelloid fungi of North America (No. 589.22 L3).
Stalpers, J. A. (1993). The Aphyllophoraceous fungi I. Keys to the species of the Thelephorales. Studies in mycology, 35, 1-168. http://www.westerdijkinstitute.nl/...
Larsen, M. J. (1983). Notes on tomentelloid fungi V. Additional new species of Pseudotomentella. Mycologia, 75(3), 556-562.
Agerer, R. (1994). Pseudotomentella tristis (Thelephoraceae). An analysis of fruitbody and ectomycorrhiza. Zeitschrift für Mykologie, 60(1), 143-158.
Based on microscopic features
57% (1)
Used references: Sten Svantesson pers. comm.
Larsen, M. J. (1969). Tomentelloid fungi of North America (No. 589.22 L3).
Stalpers, J. A. (1993). The Aphyllophoraceous fungi I. Keys to the species of the Thelephorales. Studies in mycology, 35, 1-168. http://www.westerdijkinstitute.nl/...
Barrett, C. F., Freudenstein, J. V., Lee Taylor, D., & Kõljalg, U. (2010). Rangewide analysis of fungal associations in the fully mycoheterotrophic Corallorhiza striata complex (Orchidaceae) reveals extreme specificity on ectomycorrhizal Tomentella (Thelephoraceae) across North America. American Journal of Botany, 97(4), 628-643.

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