Observation 302900: Hyphodontia arguta (Fr.) J. Erikss.

Notes:
Growing on the trunk of a dead standing Ulmus. Strictly resupinate. White rot. Forming a thin flexible layer on the surface of the wood. Spines branched. Odor not distinctive. All microscopic structures inamyloid. Monomitic. Clamps abundant. Basidia 4-spored. Sterigmata ~2.0 µm long (measured 3). Hyphidia absent. 2 types of cystidia present: lagenocystidia and leptocystidia (at least some of which were capitate. Spores smooth and ellipsoid. Spore measurements from Piximetre: 4.7 – 5.3 (5.5) × (3.3) 3.4 – 3.9 (4.3) µm, Q = (1.2) 1.23 – 1.5 (1.6); N = 12, Me = 5 × 3.7 µm; Qe = 1.4
Piximetre: 5.47 × 3.58 µm, 5.30 × 3.72 µm, 4.99 × 3.74 µm, 5.24 × 3.68 µm, 5.19 × 3.35 µm, 4.78 × 3.58 µm, 4.81 × 3.80 µm, 4.69 × 3.41 µm, 5.25 × 4.27 µm, 4.98 × 3.35 µm, 4.68 × 3.81 µm, 4.76 × 3.91 µm

Species Lists

Images

2017-11-23-14.55.04 ZS DMap crop.jpg
2017-11-23-14.55.04 ZS DMap.jpg
2017-11-23-15.06.17 ZS DMap.jpg
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2018-02-09-04.44.17 ZS PMax.jpg
Focus stacked at 40×.
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At 100x in Melzer’s
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Sides of spines showing capitate leptocystidium at 400x in Melzer’s
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Tip of spine at 400x in Melzer’s
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Clamp connection at 400x in Melzer’s
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Tips of spines (sort of) showing basidia at 400x in Melzer’s
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Lagenocystidium and capitate leptocystidium at 400x in Melzer’s
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Crush mount showing spore at 400x in Melzer’s

Proposed Names

29% (1)
Recognized by sight
57% (1)
Used references: Julich, W., & Stalpers, J. A. (1980). The resupinate non-poroid Aphyllophorales of the temperate northern hemisphere. North-Holland Publishing Company.
Yurchenko, E., & Wu, S. H. (2016). A key to the species of Hyphodontia sensu lato. MycoKeys, 12, 1.
Bernicchia, A., & Gorjón, S. P. (2010). Corticiaceae sl Cadusso.
Based on microscopic features: All parts inamyloid, monomitic, clamp connections abundant, spore smooth, spore size, lagenocystidia present, hyphidia absent

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Created: 2017-12-15 13:39:57 PST (-0800)
Last modified: 2018-02-09 02:18:49 PST (-0800)
Viewed: 41 times, last viewed: 2019-04-07 20:38:46 PDT (-0700)
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