Growing among duff and bark under a fallen conifer. Pinus ponderosa, Pseudotsuga menziesii var. glauca, Picea engelmannii and Abies concolor nearby. Asci unitunicate, operculate, thin-walled, with amyloid apices and 8 uniseriate spores. Spores hyaline and smooth and without guttules. Spore measurements: (12.7) 13.6 – 15.2 (15.4) × (7.7) 8.2 – 9.2 (9.6) µm, Q = (1.3) 1.6 – 1.8 (1.9); N = 30, Me = 14.3 × 8.6 µm; Qe = 1.7

Species Lists


Asci in Melzer’s reagent.
DSC_4176 Asci and spores at 400x in Melzer's.JPG
DSC_4184 Spores at 400x in Melzer's.JPG
DSC_4206 Asci and spores at 400x in Melzer's.JPG
DSC_4207 Asci and spores at 400x in Melzer's.JPG

Proposed Names

29% (1)
Recognized by sight
86% (1)
Used references: Korf, R. P. (1973). Discomycetes and tuberales. The fungi, vol. IV A, 249-319.
Seaver, F. J. (1942). The North American Cup-fungi:(operculates): Supplement.
Spooner, B. (2001). The larger cup fungi in Britain–part 3: The genera Peziza and Plicaria. Field Mycology, 2(2), 51-59.
Hansen, K., Læssøe, T., & Pfister, D. H. (2002). Phylogenetic diversity in the core group of Peziza inferred from ITS sequences and morphology. Mycological Research, 106(8), 879-902.
Hansen, L., & Knudsen, H. (Eds.). (2000). Nordic Macromycetes: Ascomycetes (Vol. 1). Nordsvamp.
Hohmeyer, H. (1986). Ein schlüssel zu den europäischen arten der gattung Peziza L. Zeitschrift für Mykologie, 52(1), 161-188.
Beug, M., Bessette, A. E., & Bessette, A. R. (2014). Ascomycete fungi of North America: a mushroom reference guide (Vol. 69). University of Texas Press.
Based on microscopic features

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