Observation 95689: Pseudocyphellaria aurata (Ach.) Vainio
When: 2012-04-25
Collection location: Sintra, Portugal [Click for map]
Who: zaca
No herbarium specimen

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Right on!
By: Jason Hollinger (jason)
2012-05-30 02:25:45 EEST (+0300)

Great find, then!

Good to know. BTW,
By: zaca
2012-05-30 02:20:40 EEST (+0300)

no Pseudocyphellaria appears in the portuguese checklist. Thanks again, Jason.

I agree, these “pseudocyphellae” look totally different
By: Jason Hollinger (jason)
2012-05-30 02:07:10 EEST (+0300)

from those you typically see in the cortex of members of Parmeliaceae. But they do have the same function: break in cortex that exposes the medulla (promoting gas exchange among possibly other things). In Pseudocyphellaria the medulla sort of pushes out through the hole creating these little warts. This really is perfectly typical of the genus… now that I notice it! :)

That is the “alternative”.
By: zaca
2012-05-30 01:11:15 EEST (+0300)

Sorry about the ignorance, but I would never call pseudocyphellae to the yellow marks. Good work, Jason.

Oh this is embarrassing!
By: Jason Hollinger (jason)
2012-05-30 00:15:14 EEST (+0300)

We both missed the raised yellow pseudocyphellae in the lower surface. You have to look at the larger version of the image to see it! This is Pseudocyphellaria aurata not Vulpicia. :)

I understand your comment.
By: zaca
2012-05-29 23:45:09 EEST (+0300)

In fact, even looking only here at MO one can see the yellow surface in all the specimens except mine. Have a look at observation 72613, that one was pure gray.

I totally agree
By: Jason Hollinger (jason)
2012-05-29 23:27:39 EEST (+0300)

There is nothing else similar with vivid bright yellow medulla like that. I’m just trying to figure out how the cortex can be so gray! Look at other photos on MO and the web. See what I mean? Even “easy” species can still surprise. :)

I can’t figure no alternative for it.
By: zaca
2012-05-29 23:20:37 EEST (+0300)

As you can see in the photo of the chemistry the medulla is very bright yellow. The first time I saw it was very surprised, since at the time I didn’t know the existence of lichens with such medulla.

That’s got to be it, then
By: Jason Hollinger (jason)
2012-05-29 23:02:36 EEST (+0300)

This is just extreme habitat for it. It is supposed to occur in the Smoky Mountains in southern US, as well, but I keep looking for something yellow because that’s what I know it as. I wonder now, seeing your specimen, if maybe I have seen it there, as well. We have Usnocetraria oakesiana which looks identical to your specimen except the medulla is pure white and the soralia are at most weakly yellowish. Without scratching it open, maybe it’s possible to confuse the two. Thanks for posting this!

Very far from being common …
By: zaca
2012-05-29 22:54:00 EEST (+0300)

I have found it only in two places, very close to one another.

By: Jason Hollinger (jason)
2012-05-29 22:04:39 EEST (+0300)

That’s the least yellow specimen I’ve ever seen by a huge margin. But what else could it possibly be?? Very interesting. Is this common there?

Created: 2012-05-28 23:02:30 EEST (+0300)
Last modified: 2012-05-30 00:15:38 EEST (+0300)
Viewed: 73 times, last viewed: 2016-10-21 20:13:57 EEST (+0300)
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