Observation 159213: Hymenelia epulotica (Ach.) Lutzoni

When: 2013-07-29

Collection location: Door Bluff Headlands County Park, Wisconsin, USA [Click for map]

Who: Andrew Khitsun (Andrew)

Specimen available

Proposed Names

29% (1)
Recognized by sight
29% (1)
Used references: ID provided by Jim Bennett
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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By: Jason Hollinger (jason)
2014-11-27 13:02:50 CST (-0500)

I couldn’t make head nor tails of this!

By: Andrew Khitsun (Andrew)
2014-11-09 19:09:43 CST (-0500)

Please see this observation for P.rupestris:
and this page for H.epulotica:

Also, with obtained knowledge in hand, I reexamined my specimens of this “pink carpet” for those hard-to-see apothecia. Sure enough, they are all over the place, but practically invisible. I don’t really know how the thallus is supposed to look like for H.epulotica, given the dearth of images, but being an amateur I am not afraid to get a kick in the gut from Jason and other pros, so I went ahead and renamed this observation H.epulotica. I think this “pink carpet” IS a thallus of this species (all right, guys, now is the part where you start throwing rotten eggs at me :-)

This is all I could find image-wise for this species online:

The nature of these pink carpets is still in doubt.
By: Andrew Khitsun (Andrew)
2014-11-09 11:06:20 CST (-0500)

However, while looking at it under the microscope, Jim Bennett discovered what he thinks is Hymenelia epulotica, which would be a state record. The specimen he examined is on dolomite chip found next to the rocks pictured here, with similar pink patterns on it. When he showed it to me under microscope, I realized I’d never figured it was separate lichen species – so obscure and blending in it is. I just though those were roundish areoles of whatever this pink thing is, but Jim pointed out it was actually apothecia of Hymenelia epulotica. In these photos, see the one second from the bottom – it clearly shows roundish thingies that turned out to be apothecia. Also in the same photo, there are orange apothecia of Protoblastenia rupestris. Of course there is whole bunch of other stuff visible in photos: Acarospora etc. I will try to retake the picture of both Hymenelia and Protoblastenia and post it here if successful

I’m not sure if it’s just leftovers.
By: Andrew Khitsun (Andrew)
2014-02-09 11:31:22 CST (-0500)

Under 4x microscope it looks like a sandy surface, and there is not much to it. Of course it stands out against the background in these pictures.

Created: 2014-02-05 20:21:18 CST (-0500)
Last modified: 2014-11-09 20:41:21 CST (-0500)
Viewed: 94 times, last viewed: 2018-03-11 09:19:38 CDT (-0400)
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