Observation 44406: Placidium arboreum (Schwein. ex Michener) Lendemer
When: 2010-04-18
Herbarium specimen reported

Notes: On mossy at base of white oak (Quercus alba) on high, dry, open hardwood ridge, around 4000’. This is apparently a new record for the park, although Chris pointed out that there are reports from just outside the park. I must have walked by it a hundred times.

Images

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perithecia
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felty “rhizines” under squamules
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section of perithecia in water at 100x
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spores in water at 1000x (possibly the worst spore photo I’ve ever taken!)
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green when wet
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green when wet

Proposed Names

87% (1)
Eye3 Eyes3
Used references: “Ozark Keys” Harris & Ladd 2004
Based on microscopic features: perithecia, 8 simple smooth hyaline spores per ascus
Based on chemical features: all spot tests negative

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Eye3 = Observer’s choice
Eyes3 = Current consensus

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Created: 2010-04-18 20:38:59 EDT (-0400)
Last modified: 2010-04-18 20:39:05 EDT (-0400)
Viewed: 97 times, last viewed: 2016-10-08 13:05:01 EDT (-0400)
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