Observation 111004: Peltigera elisabethae Gyelnik
When: 2012-08-07
Herbarium specimen reported

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Recognized by sight
84% (1)
Eyes3
Recognized by sight

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ID confirmed by Jim Bennett
By: Andrew Khitsun (Andrew)
2014-06-23 19:02:27 PDT (-0700)
Gestalt
By: Jason Hollinger (jason)
2012-09-26 18:37:14 PDT (-0700)

I know what you mean. Hmmm. Keep an eye on these things, like whether the lobules are along cracks or the margins, and so on. See it things clearly fall into two “bins”. Maybe you’ve found a pattern the rest of us have missed!

There is a lot that goes into one’s perception.
By: Andrew Khitsun (Andrew)
2012-09-26 17:36:36 PDT (-0700)

It’s hard to single out any one character. But yes, “frillier” than others. Lobes appear generally more narrow and more strongly upturned, and steel-gray in color (mind you, the specimen was fairly wet when found – so that color and strongly upturned lobes stood out; and while the color does change to blackish when I wet the specimen, the lobes’ upturned position doesn’t change much between wet and dry stages). And the way this guy bristles with rhizines on lobe tips – like a porcupine raizing its tail against any threat! Also, many other specimen, including some of mine and some of yours, sport bunched-up regeneration lobules in the middle of thallus that can be seen with a naked eye. This specimen, on the other hand, has lobules along the cracks, the “classic way” according to the literature, even though this specimen was almost two feet in length and more than a foot across (definitely not a youngster).

Hmmm, because of the crisped margins?
By: Jason Hollinger (jason)
2012-09-25 23:39:28 PDT (-0700)

I’m looking at all 5 of your observations trying to understand what stood out so clearly while you were in the field. Scale is hard to judge from photos. It does look “frillier” than the others…

Weird specimen
By: Andrew Khitsun (Andrew)
2012-09-25 20:44:00 PDT (-0700)

This one really stands apart from everything that I picked up before. When I first saw it, I thought ’What the heck is this?"

This is definitely P. elisabethae
By: Jason Hollinger (jason)
2012-09-25 00:12:16 PDT (-0700)

The almost complete lack of veins, concentric rhizines, no tomentum, crisped margin, regeneration lobules… No question. You’re getting a good idea of the full variation in this species.

Still didn’t find tomentum
By: Andrew Khitsun (Andrew)
2012-09-23 18:44:20 PDT (-0700)

But upper surface appears mottled when wet. And I forgot to mention the environment: wet woods, in semi-shade. This pelt grew over debris on top of rotted away log lying in the spring.

I’ve never seen this species before.
By: Andrew Khitsun (Andrew)
2012-09-23 18:39:29 PDT (-0700)

Or so I think – it looks very different. Most startling are jagged edges of lobes. I’m looking under microscope now trying to see if there is any tomentum. Meanwhile, there are clearly visible regeneration lobules along the cracks. The lower surface is basically veinless, white at the tips turning to dark with few oval white spaces. Rhizines are thick tufts, white at the edges and, again, darker toward the interior of the thallus.

Created: 2012-09-23 18:25:44 PDT (-0700)
Last modified: 2012-09-25 20:44:16 PDT (-0700)
Viewed: 87 times, last viewed: 2016-10-22 01:01:02 PDT (-0700)
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