Observation 262092: Aleurodiscus oakesii (Berk. & M.A. Curtis) Cooke

Notes:
Growing on the bark of a live oak tree. Monomitic. All septa observed were without clamps. Spores finely echinate and amyloid in Melzer’s reagent. Other structures inamyloid. Acathohyphidia present, with aculei toward the apex and not over the entire length. Gloecystidia thick-walled, some with monilioid apices. Basidia 4-sterigmate. Spore measurements from Piximetre: (17) 18.8 – 23.2 (24) × (10.9) 11.3 – 14.6 (14.9) µm, Q = 1.4 – 1.6 (1.7); N = 11, Me = 20.6 × 13.6 µm; Qe = 1.5
Individual spores: 16.97 × 10.86 µm, 20.33 × 14.03 µm, 20.25 × 13.85 µm, 23.16 × 14.59 µm, 22.42 × 14.16 µm, 23.98 × 14.86 µm, 20.22 × 14.50 µm, 18.94 × 11.27 µm, 21.92 × 13.65 µm, 18.77 × 12.98 µm, 19.70 × 14.32 µm

Species Lists

Images

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4-sterigmate basidia with basidiospores attached viewed in Melzer’s reagent under my 40x lens.
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Spores and acanthohyphidia viewed in Melzer’s reagent under my 40x lens.
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Acanthohyphidia, gloeocystidia and spore at 400x in Melzer’s
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Crush mount showing gloeocystidia and simple-septate hyphae at 400x in Melzer’s
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Acanthohyphidium at 400x in Melzer’s
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Spore at 400x in Melzer’s

Proposed Names

86% (1)
Recognized by sight: On oak bark, disc-shaped
Used references: Chamuris, G. P. (1988). Non-stipitate stereoid fungi in the northeastern United States and adjacent Canada. J. Cramer.
Julich, W., & Stalpers, J. A. (1980). The resupinate non-poroid Aphyllophorales of the temperate northern hemisphere. North-Holland Publishing Company.
Based on microscopic features: Amyloid and finely echinate spores, acanthohyphidia present

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Created: 2016-11-21 04:30:00 CST (-0500)
Last modified: 2018-02-12 17:09:25 CST (-0500)
Viewed: 30 times, last viewed: 2019-04-17 20:28:46 CDT (-0400)
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