When: 2017-09-16

Collection location: Mohican State Park, Ashland Co., Ohio, USA [Click for map]

Who: Django Grootmyers (Heelsplitter)

Specimen available

Notes:
Found by Jessica Rosenlieb on a group foray. Strong cucumber-like odor. Spore print faint but very light brownish where visible. All structures inamyloid. Clamp connections present in lamellar trama. Pleurocystidia abundant: tapered gloeocystidia with yellowish content in Melzer’s reagent. Most pleurocystidia found in Melzer’s reagent appeared to be somewhat collapsed. Pleurocystidia measurements: (51) 52.1 – 64.8 (70.1) × (19.1) 21.2 – 26.7 (28) µm, Q = (1.9) 2.1 – 2.9 (3.1); N = 8, Me = 59.6 × 24.6 µm; Qe = 2.5. Basidia clavate and 4-sterigmate. Basidia measurements: 21.2 – 23.47 (23.5) × 6.4 – 7 µm, Q = (3.3) 3.31 – 3.37 (3.4); N = 3, Me = 22.2 × 6.6 µm; Qe = 3.3. Spores smooth, hyaline and thick-walled. Spore measurements: (6.8) 7.5 – 9.7 (11) × (2.9) 3.2 – 3.9 (4) µm, Q = (1.9) 2.1 – 2.8 (3.3); N = 30, Me = 8.5 × 3.6 µm; Qe = 2.4

Species Lists

Images

DSC_5559 crop.jpg
DSC_5561.JPG
DSC_5560.JPG
DSC_0427 Spores and other structures at 400x in Melzer's.JPG
DSC_0444 Pleurocystidia, basidia and spores at 400x in Melzer's.JPG
DSC_0450 Basidia, pleurocystidia and spores at 400x in Melzer's.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 Press Inc.
Stuntz, D. E., & Isaacs, B. F. (1962). Pacific northwestern fungi. I. Mycologia, 54(3), 272-298.
Noordeloos, M. E. (1983). Notulae as Floram agaricinam neerlandicam—I-III. Marasmiellus, Macrocystidia and Rhodocybe. Persoonia-Molecular Phylogeny and Evolution of Fungi, 12(1), 31-49.
Kuo, M. (2007, March). Macrocystidia cucumis. Retrieved from the MushroomExpert.Com Web site: http://www.mushroomexpert.com/macrocystidia_cucumis.html
Based on microscopic features

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= Observer’s choice
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