Observation 192512: Arthonia punctiformis Ach.

When: 2014-05-02

Collection location: Willow River State park, Wisconsin, USA [Click for map]

Who: Andrew Khitsun (Andrew)

Specimen available

Proposed Names

29% (1)
Recognized by sight
57% (1)
Eye3 Eyes3
Used references: Jim Bennett

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Eye3 = Observer’s choice
Eyes3 = Current consensus


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Jim Bennett’s microscopy:
By: Andrew Khitsun (Andrew)
2015-04-25 21:29:58 PDT (-0700)

Spores 20×6, hyaline, 3-septate, 1 end tapers, other end larger; asci 4-spored?

On bark of willow and aspen growing on river bank.
By: Andrew Khitsun (Andrew)
2014-12-08 20:49:05 PST (-0800)

Maybe more than one species, especially since different trees are involved. On some photos one can see what appears to be different species with tiny perithecia, while most of the thallii are sterile.

Created: 2014-12-08 20:30:35 PST (-0800)
Last modified: 2015-04-25 20:56:20 PDT (-0700)
Viewed: 26 times, last viewed: 2017-06-19 11:31:59 PDT (-0700)
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