Observation 87795: Flavopunctelia soredica (Nyl.) Hale

When: 2012-02-15

Collection location: White Lake, Oakland Co., Michigan, USA [Click for map]

Who: Insomnia

Specimen available

Proposed Names

26% (1)
Recognized by sight
84% (1)
Recognized by sight: see comments

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Eye3 = Observer’s choice
Eyes3 = Current consensus


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Sure, it’s easy enough to do
By: Jason Hollinger (jason)
2012-02-15 16:52:46 CST (-0600)

You don’t need to re-upload the images, just create two more observations and click on “Reuse Image” in each.

Note that these were all the same genus as recently as ~50 years ago – Parmelia senu lato. :) Just a matter of knowing which particular details are important for which groups. Took lichenologists a very long time to figure that out the first time (and they’re still working on it in some cases).

Should I seperate the images into their rightful observations?
By: Insomnia
2012-02-15 16:21:48 CST (-0600)

I really dont have an eye for lichen I guess.. Geez.. Lol. I seriously would of thought these were all the same species, let alone genus!!

Should I remove the images from this observation and create observations in their correct place? Or should I leave the images here, so people may go by your comments, and also add them to their rightful observations?

Thanks again, you never cease to impress..

Sorry, one more comment…
By: Jason Hollinger (jason)
2012-02-15 12:51:14 CST (-0600)

I screwed up on the first photo, it is yet another species. I was expecting to see Flavoparmelia so I saw it. :) I was concerned on closer inspection to see subtle mottling on the lobe tips. That’s because this is Flavopunctelia soredica not Flavoparmelia! Sorry. The soralia are totally different, too, if you compare first and third photos. Flavoparmelia caperata becomes really wrinkly in the interior and the wrinkles break down into pustular soredia. Flavopunctelia soredica has soredia in thick strips along the margins.

The other similar species is Flavopunctelia flaventior, and it is more typical of Flavopunctelia because it has much more conspicuous mottling (irregular to dot-like white spots, especially visible near the tips). F. soredica is a bit unusual in having such inconspicuous mottling. You might have both species in Michigan.

Side-by-side in first photo
By: Jason Hollinger (jason)
2012-02-15 12:42:35 CST (-0600)

Just noticed, you can see some Parmelia on the left side of the first photo. Notice the difference in color: Parmelia is grayer (atranorin), Flavoparmelia is greener/yellower (usnic acid). And notice the mottling in Parmelia compared to the evenly-colored Flavoparmelia. Oh, and this is a good photo to see the difference in shape of lobe tip: Parmelia has sort of squared-off, flat to concave lobe tips, Flavoparmelia has rounded, somewhat convex lobe tips. A bit subtle, maybe, but worth paying attention to, because it’s a useful “gestalt” character.

Two species here
By: Jason Hollinger (jason)
2012-02-15 12:37:07 CST (-0600)

image 199708 and image 199710 are Flavoparmelia caperata (note particularly the smooth, evenly-colored surface near the lobe tips, Punctelia has conspicuous white spots).

image 199709 is Parmelia sulcata I think. It’s hard to see in this specimen because soredia have almost completely covered the surface — a very well-developed specimen! — but you can see some lobe tips here and there showing irregular cracks and white markings on the surface.

Created: 2012-02-15 03:35:28 CST (-0600)
Last modified: 2012-02-15 12:52:10 CST (-0600)
Viewed: 71 times, last viewed: 2017-09-12 19:04:17 CDT (-0500)
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