Observation 88311: Lichen P. Micheli

When: 2011-07-20

Collection location: Cave Point County Park, Door Co., Wisconsin, USA [Click for map]

Who: Andrew Khitsun (Andrew)

No specimen available


Proposed Names

63% (2)
Recognized by sight
56% (1)
Recognized by sight
Based on microscopic features: need microscopic details to get any farther

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= Observer’s choice
= Current consensus


Add Comment
don’t know
By: Richard Droker (wanderflechten)
2012-03-02 17:46:52 CET (+0100)

Don’t know if that would rule out T. atra. All that I’ve seen had very black disks.

Good point
By: Jason Hollinger (jason)
2012-02-29 01:15:10 CET (+0100)

Always forget that one. It has that distinctive violet hymenium. Would it have any external visible consequences? I see, for example, a few apothecia have some brown in them. Would that rule out Tephromela atra?

another possibility Tephromela atra?
By: Richard Droker (wanderflechten)
2012-02-29 00:14:21 CET (+0100)

can you rule out T. atra? (also K+y)

Gotta be Lecanora
By: Jason Hollinger (jason)
2012-02-28 09:23:39 CET (+0100)

Could be L. circumborealis – it has dark disks and smooth rims like this. It is in the hybocarpa group, but its apothecia rims have exceptionally thick cortex below the apothecia. All the species in the group I know of are K+y and have tiny granules/crystals in the epihymenium and inspersing into the hymenium, as well as large blocky crystals in the rims.