Observation 20632: Physcia aipolia (Ehrh. ex Humb.) Fürnr.
When: 2009-04-26
No herbarium specimen

Images

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Copyright © 2009 J.H.
42098
Copyright © 2009 J.H.
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Copyright © 2009 Johannes H.
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Copyright © 2009 Johannes H.
Here is the under side I cut it (and some of the tree) off with a knife,
it did seem to have whitish root like attachment too.
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Copyright © 2009 Johannes H.
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Copyright © 2009 Johannes H.

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Comments

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That first picture still bothers me…
By: Jason Hollinger (jason)
2009-05-10 21:27:04 MDT (-0600)

But all the new (dry) photos show typical P. aipolia. Brodo says that the apothecia are “very dark brown” not black. Even when wet I’ve never seen anything other than what I’d call black. Learn something every day. I was wondering if you’d found a crazy Pannaria — it would be pretty far out of its expected range, but it made about as much sense as brown-apotheciate Physcia at the time!

here is…
By: Johannes Harnisch (Johann Harnisch)
2009-05-04 16:32:08 MDT (-0600)

I went back there to get more photos for you and BTW there was still snow back there in those woods,
one photo is of the bottom (surface?) I tried to get a photo of the root like attachment but it isn’t so great,

???
By: Johannes Harnisch (Johann Harnisch)
2009-04-27 14:52:15 MDT (-0600)

You want surface of both the lichen and the tree under the lichen?

Never seen Physcia with brown apothecia
By: Jason Hollinger (jason)
2009-04-27 01:00:12 MDT (-0600)

Same with observation 20631. Please take a look at the underside of these lichens: Physcia will be white to at most pale tan, with short discrete white root-like structures scattered all over attaching it to the substrate. Also, if you would note the texture of the surface: is it pure light gray, or is it mottled with paler markings and/or pruina. Are the younger (outer) apothecia starting out black (or gray due to dsting of white pruina)?

One specimen with aborted apothecia or some other mutation causing old apothecia to lose pigment I could deal with, but four specimens with clearly brown apothecia…

Created: 2009-04-26 19:03:11 MDT (-0600)
Last modified: 2009-04-26 19:03:11 MDT (-0600)
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