Observation 116072: Lichen P. Micheli
When: 2012-11-03
Who: Byrain
Herbarium specimen reported

Notes: Growing along the ridgeline on several rocks in full sun, I haven’t seen it anywhere except the ridgeline, the medulla is white. I’m uploading this now so that the little bag with a bunch of black dots can have a MO observation number and not get lost. :)

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By: Byrain
2012-11-08 22:48:40 MST (-0700)

sounds like a good idea, I’ll try it, I’ve been trying to get a lot of practice with lbms hoping it will pay off. :) And I was able to pop these off the rock relatively easily with a pocket knife, most of them intact.

You might try this
By: Jason Hollinger (jason)
2012-11-08 11:19:37 MST (-0700)

Presumably you just have a baggie full of stray apothecia. (It’s hard to collect on this kind of rock without shattering the rock or bringing home a kilo of it… and leaving an enormous scar.) Try gluing them to a slide first with Elmer’s. Should be much easier to section them cleanly.

By: Byrain
2012-11-08 04:30:44 MST (-0700)

it is a very attractive lichen, I’ve been meaning to get some photos of it for a while now, but I always have been low on time by time I get to the ridgeline. Its good to know that there are some relatively easy black dot lichens out there, I’ll see if I can get a some micro info up after I get through the tackle boxes in the fridge, although I can’t say my previous micro attempts with black dot lichens have produced very useful sections.

Gorgeous specimen
By: Jason Hollinger (jason)
2012-11-08 00:54:34 MST (-0700)

Despite being “just another black dot lichen”. :) These look like they have that tell-tale reddish tint of Sarcogyne. Definitely check the spores on these. You want to distinguish between Lecidea laboriosa (8 “normal” spores, i.e., colorless ellipsoid simple on the order of 10 or so µm long) and Sarcogyne similis (hundred tiny ellipsoid colorless simple spores). I think those are your only options. There’s a description of both on CNALH, I think.

Created: 2012-11-07 19:01:26 MST (-0700)
Last modified: 2012-11-08 00:50:30 MST (-0700)
Viewed: 60 times, last viewed: 2016-10-22 03:14:44 MDT (-0600)
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