Observation 89361: Buellia erubescens Arnold

When: 2011-08-23

Collection location: Toft Point State Natural Area, Wisconsin, USA [Click for map]

Who: Andrew Khitsun (Andrew)

No specimen available

Proposed Names

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

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Eye3 = Observer’s choice
Eyes3 = Current consensus


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Jim Bennett Confirmed ID Buellia stillingiana
By: Andrew Khitsun (Andrew)
2014-08-31 23:04:27 EDT (-0400)
All mixed up
By: Andrew Khitsun (Andrew)
2012-03-15 19:41:07 EDT (-0400)

OK, I’m glad we figured it out. And I didn’t think of them as pycnidia too until you mentioned it might be. But I still divided this specimen into two observations – let me fix it and move the other photos into this one. The reason was there were many of those things out there, and I wasn’t sure how many I collected/photographed. I also did some photos al low lighting – those come out too darb in color, losing most of the juicyness (but shooting in vivid setting exagerates the color too much). I’ve removed the worst photos from this observation.

Okay, I remember that specimen now
By: Jason Hollinger (jason)
2012-03-15 19:32:36 EDT (-0400)

Just looked at it again. Yeah, there’s something very traumatic happening to this thing. You can sort of see it in this set of photos, too. Half of the apothecia have been eaten, and the remaining ones are “proliferating”, mostly from the margins. And sometimes these apothecia are proliferating further, and so on, resulting in contorted piles of apothecia. I remember wondering if there were a parasite involved. But I didn’t find clean evidence of one.

But. The spot tests were right (K+y C- KC- UV-), and the spores were right (dark, septate, right size). Let’s just say that this is an atypical or unhealthy specimen.

(The “pycnidia”, at least on the specimen I have in hand, are just apothecial initials. They start semi-immersed as black pycnidium-like pimples and quickly emerge to become tiny sessile black disks with conspicuous rims.)

I might’ve mixed things up a bit here.
By: Andrew Khitsun (Andrew)
2012-03-15 18:41:39 EDT (-0400)

Jason, you have specimen #8232011-34 from Moonlight Bay (or Bailey’s Harbor – both of them sandwich peninsula where I got it) that may or may not be identical to this one. J.Bennett has this exact specimen.

Looks like it has lots of pycnidia
By: Jason Hollinger (jason)
2012-03-15 02:08:40 EDT (-0400)

I don’t recall Buellia having such conspicuous pycnidia. I’ve seen it in Bacidina and others, though.

Created: 2012-03-14 21:12:39 EDT (-0400)
Last modified: 2018-03-02 21:59:29 EST (-0500)
Viewed: 125 times, last viewed: 2018-03-03 09:04:25 EST (-0500)
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