Observation 202919: Nephroma helveticum Ach.
When: 2015-04-12
No herbarium specimen

Proposed Names

77% (2)
Eyes3
Recognized by sight
28% (2)
Eye3
Recognized by sight: upper and lower surfaces are smooth, very few lobules on the margins (not as N. helvetica). Medula white (not yellowish as N. laevigatum)
Based on microscopic features: upper and lower surfaces are smooth, very few lobules on the margins (not as N. helvetica). Medula white (not yellowish as N. laevigatum)

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Eye3 = Observer’s choice
Eyes3 = Current consensus

Comments

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Thank you!
By: Vitaly Charny (vcharny)
2015-04-18 19:19:21 CEST (+0200)
We might have to agree to disagree on this one!
By: Jason Hollinger (jason)
2015-04-18 19:07:45 CEST (+0200)

I don’t think this looks anything like the photo of N. bellum in Macrolichens of New England! (Yuck! But the photo of N. helveticum in M. of N. E. is really atypical. Ignore that.)

I agree that this is less lobulate than usual. But compare with observation 44384 and observation 59593… assuming those are correctly identified, too! :)

picture
By: Vitaly Charny (vcharny)
2015-04-18 18:59:55 CEST (+0200)

It is look exactly as N. bellum on picture in The Macrolichens of New England. I’ve looked at the map in Brodo. However I found couple butterfly species in Alabama way of their northern range… This one didn’t look like all my other pictures of N. helveticum. However let it be until more data…

I must protest
By: Jason Hollinger (jason)
2015-04-18 18:34:23 CEST (+0200)

Sorry to be negative, but this really looks like typical N. helveticum from eastern North America. (It looks quite different in western North America, ignore photos from elsewhere, they’ve got to be different species, but that’s not for me to decide. :)

Furthermore, check out the range map for N. bellum — it’s been reported from high elevations in the Smokies (but apparently rare, as I’ve looked for it in vein up there numerous times), otherwise it is unknown from lower elevations in the southeast.

The close-ups of the lobe tips aren’t very conclusive: the lobules appear farther back in the interior… where I think they are perfectly abundant according to the first photo.

(It’s true, I must admit, that just about all the cyanobacterial species of Nephroma appear to be capable of producing lobules, but this specimen looks like it is “supposed” to be lobulate, not just a few random outgrowths due to stress.)

Created: 2015-04-17 20:50:04 CEST (+0200)
Last modified: 2015-04-18 18:34:49 CEST (+0200)
Viewed: 50 times, last viewed: 2016-10-21 23:31:31 CEST (+0200)
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