Observation 96564: Sarcogyne clavus (DC.) Kremp.

When: 2012-06-03

Collection location: Governor Dodge 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: ID provided by Jim Bennett

Please login to propose your own names and vote on existing names.

Eye3 = Observer’s choice
Eyes3 = Current consensus


Add Comment
I usually don’t
By: Andrew Khitsun (Andrew)
2016-03-09 20:36:58 PST (-0800)

My pruinose species is what I call “blue eyes” of S.regularis on dolomite. Those are the ones that don’t cause any controversy. But the material like in this observation and other “black dots” are usually on sandstones, and don’t interact with “blue eyes”.

Multiple species
By: J-Dar
2016-03-07 19:01:44 PST (-0800)

Do you guys find pruinose and non-pruinose Sarcogyne species occurring right next to each other? I have some collections yet to be put under the compound scope that have distinctly different taxa occurring contiguously, both looking like Sarcogyne, one with no pruina and the other quite pruinose. Thallus development is different too.

By: Jason Hollinger (jason)
2016-03-07 18:54:24 PST (-0800)

Sarcognye still stumps me.

There were some struggles identifying this one.
By: Andrew Khitsun (Andrew)
2016-03-07 18:49:49 PST (-0800)

Jim Bennett was certain it’s Sarcogyne, but it was hard to pin down species. It’s too big for S.privigna (in fact the size of apothecia varies greatly within a cluster of them). It’s quite different from S.regularis – not only because of lack of pruina, but the shape of them is different (we talked about it with Jason thinking that the species may manifest itself differently while on sandstone, versus normal substrate dolomite). But eventually S.clavus became the prime suspect. Looking at the specimen now, it doesn’t look like classic S.clavus, but some apothecia look like if not cracked but then have warty rims where they meet other apothecia. And (some) of apothecia surface looks roughened.

By: Jason Hollinger (jason)
2012-06-06 18:52:27 PDT (-0700)

Gives “little black dot” lichens a good name. :) Some sort of Lecidea would be my first (wild) guess…

Created: 2012-06-06 18:29:00 PDT (-0700)
Last modified: 2016-03-07 18:42:11 PST (-0800)
Viewed: 84 times, last viewed: 2018-04-17 16:48:21 PDT (-0700)
Show Log