Observation 223063: Ionomidotis irregularis (Schwein.) E.J. Durand

When: 2015-11-03

Collection location: Buncombe Co., North Carolina, USA [Click for map]

Who: Mike Hopping (AvlMike)

No specimen available

These grew gregariously and in clusters from a well-decayed deciduous log in a mixed woods. If you steam-ironed these things they’d be simple fronds with flat zones of attachment that were relatively narrow compared to the breadth of a “leaf.” Radiating ridges were inconsistent and only occurred on the side showing a pattern of tiny pits and sometimes reticulation in the pink material. The obverse sides lacked pits, were glabrous and minutely leathery in visual texture. Pink patches on those sides were scattered and irregular in shape. The pinkish-brown material was solidly attached as a layer a fraction of a millimeter thick. It didn’t wash or crack off, even after drying. The overall consistency of a frond was flexible and moderately tough. Context was shiny black and seemed homogenous—no evident fibers. No smell. Spore print white. There was minimal shrinkage with drying. They did not revive when placed in water.

Proposed Names

-82% (1)
Used references: :)
25% (4)
Eye3 Eyes3
Recognized by sight: well-decayed deciduous log fits

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Eye3 = Observer’s choice
Eyes3 = Current consensus


Add Comment
By: Mike Hopping (AvlMike)
2015-11-16 09:50:42 CST (-0500)

Devilish clever, those cups. In this instance, the “ear” characteristic totally overwhelms any suggestion of a basic cup shape. The coating is pinkish-brown rather than the chestnut- or olive-brown I find referenced in the accessible literature. But I think you’ve nailed it.

FWIW, no KOH is necessary to elicit the purplish-brown pigment mentioned in those sources. An overnight swim in plain water extracts it just fine.

Created: 2015-11-15 20:05:27 CST (-0500)
Last modified: 2017-09-08 18:15:07 CDT (-0400)
Viewed: 61 times, last viewed: 2017-09-08 18:15:13 CDT (-0400)
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