Observation 79692: Mycoacia uda (Fr.) Donk
When: 2011-10-15
Herbarium specimen reported

Notes: In mixed Douglas Fir (Pseudotsuga menziesii var. menziesii), Redwood (Sequoia sempervirens), Tanoak (Notholithocarpus densiflorus) and Hazelnut (Corylus Cornuta var. Californica).

On decaying wood, though which of the four I’m not sure.

Clamp connections present; four-spored basidia; spores smooth, with drops, eliptical and approx 3×6 μm. Dr. Desjardin claimed to see numerous cystidia, but I found it challenging to pick out anything distinctly cystidioid among the basidioles.

Species Lists


tooth – 100x KOH and Congo Red
tooth edge – 400x KOH and Congo Red
tooth edge – 1000x KOH and Congo Red
tooth edge – 1000x KOH and Congo Red
tooth – 1000x KOH and Congo Red – crush mount
tooth – 1000x KOH and Congo Red – crush mount

Proposed Names

79% (2)
Eye3 Eyes3
Recognized by sight: Fruiting body fully resupinate and fused with the substrate, forming expanses of several centimeters, more rarely several decimeteres, surface consisting of a thin, waxlike subiculum from which the densely crowded, slender, and pointed spines emerge, sulfur-, wax-, to ocher-yellow, spines 1-2mm long and usually solitary, but here and there also fused at the base, tips smooth or more rarely somewhat fringed, marginal zone with shorter spines and ending smoothly, sometimes rather fringed or farinose. KOH colors the fruiting body purple-red.
Used references: Breitenbach, Josef, and Fred Kranzlin. Fungi of Switzerland. Vol. 2: Non gilled fungi. Lucerne: Verlag Mykologia, 1986. 162-63

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Eye3 = Observer’s choice
Eyes3 = Current consensus


Add Comment
By: Danny Newman (myxomop)
2012-07-16 12:51:18 CDT (-0500)

why the deprecation?

By: Darvin DeShazer (darv)
2011-10-17 21:42:25 CDT (-0500)

Looks like a good fit with color photos in Google and in:
Eriksson, John and Leif Ryvarden. 1976. The Corticiaceae of North Europe 4, Hyphodermella – Mycoacia. Fungiflora, Oslo, Norway. 337p.

By: Danny Newman (myxomop)
2011-10-17 21:25:15 CDT (-0500)

reaction was the lynchpin character. Instant purple-red coloring on contact. The color change was not noticeable in unstained KOH mounts of single teeth.

Created: 2011-10-16 23:42:51 CDT (-0500)
Last modified: 2012-07-16 09:20:54 CDT (-0500)
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