Notes:
Collector’s_Name: Alden C. Dirks
Substrate: Vertical exposed wood of standing, mostly dead Salix sp., maybe Salix fragilis
Habitat: mixed hardwood forest
Host: Salix sp.
Other: Biguttulate, narrowly cylindrical spores, length (6.4) 7.5-8.8 (9.4) x width (2.2) 2.5-2.9 (3.2) µm, Q (2.1) 2.7-3.3 (3.5); guttule 1 diameter (1.2) 1.3-1.6 (1.6), guttule 2 diameter (1.3) 1.4-1.6 (1.6) µm, ratio of larger guttule to smaller guttule (1) 1-1.2 (1.2) – so they are practically the same size within a spore; basidia about 15 µm long by 5.3 µm wide with (4.6) 4.8-5.5 (5.6) sterigmata; sharp, long subulate cystidia with rectangular encrustations; subicular hyphae somewhat thick-walled, clamped, with a width of (3.6) 3.9-5.1 (5.3)

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Proposed Names

57% (1)
Based on microscopic features: Presence of subulate cystidia with spirally arranged rectangular crystals
85% (1)
Used references: Ordynets, A., Scherf, D., Pansegrau, F., Denecke, J., Lysenko, L., Larsson, K.-H., & Langer, E. (2018). Short-spored Subulicystidium (Trechisporales, Basidiomycota): High morphological diversity and only partly clear species boundaries. MycoKeys, 35, 41–99. https://doi.org/10.3897/mycokeys.35.25678

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