When: 2020-01-10

Collection location: Quincy Bluff State Natural Area, Wisconsin, USA [Click for map]

Who: aarongunnar

No specimen available

on dead, weathered wood. C+ yellow/orange – seemed like some parts stayed yellow, while others turned more of an orangeish-red.


C+ test
soredia in central part of pic?
from same piece of wood – perhaps something else entirely?
from same piece of wood – perhaps something else entirely?
from same piece of wood – perhaps something else entirely?

Proposed Names

84% (1)
Recognized by sight: black apothecia, soredia, C+r (at least in part!)

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= Observer’s choice
= Current consensus


Add Comment
You’ve convinced me
By: Jason Hollinger (jason)
2020-01-15 16:44:59 PST (-0800)

Let’s just write off the apparent C+ y/o reaction to the cortex breaking down and algae showing through after the C+ pink reaction fades.

…and added 3 more
By: aarongunnar
2020-01-14 07:32:57 PST (-0800)

from same piece of wood, but I wonder if it is the same thing? No apothecia present, but there is soredia.

added a pic
By: aarongunnar
2020-01-14 07:23:50 PST (-0800)

possible sorediate area in the middle? I’ll admit, tough to tell. As for the other genera, Pycnora, Xylospora, Toensbergia, etc…none seemed to fit very well, based on the images/chemistry, but I am not really sure.

I think you’re on the right track
By: Jason Hollinger (jason)
2020-01-14 02:56:03 PST (-0800)

But I’m concerned that there are no soredia visible. (Do you see some I’m missing?) You might consider one of the crustose Hypocenomyce (sensu lato), e.g. Pycnora or… I forget the names of the new genera, sorry!

Created: 2020-01-13 20:38:31 PST (-0800)
Last modified: 2020-01-15 16:45:12 PST (-0800)
Viewed: 42 times, last viewed: 2020-01-15 19:38:48 PST (-0800)
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