Observation 21588: Peltigera elisabethae Gyelnik
When: 2009-05-14
No herbarium specimen

Proposed Names

28% (1)
Used references: Hinds and Hinds, 2007, pp.355-374
61% (2)
Eye3 Eyes3
Used references: Brodo covers only three lobulate Peltigera: P. pacifica is western, P. praetextata is tomentose, leaving P. elisabethae.
-28% (1)
Recognized by sight: Shiny upper surface; broad black veins with highly-contrastive interspaces.

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Eye3 = Observer’s choice
Eyes3 = Current consensus

Comments

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Thanks, Jason
By: Chris Parrish (kitparrish)
2010-04-20 20:36:03 MSD (+0400)

… for your enthusiastic help with this and so many other slippery identifications.

You’re right, Chris
By: Jason Hollinger (jason)
2010-04-20 18:44:36 MSD (+0400)

I see now that P. elisabethae does this, as well. (The broad black mass of veins with conspicuous white interspaces.) Another useful characteristic is that P. elisabethae, like P. horizontalis has its rhizines arranged in concentric rows near the growing tips. Yours does not show this very well. On P. horizontalis you can even see it clearly from above as concentric rings of dimples, but I don’t see it so clearly on my (few) photos of confirmed P. elisabethae.

I’ve changed my mind…
By: Jason Hollinger (jason)
2009-08-26 13:54:31 MSD (+0400)

It turns out that most Peltigera species can display this amount of “lobules”. The veins and rhizines are much more reliable. These are very typical of P. polydactylon. P. kristinssonii does this as well (black with little white interspaces), but I don’t think that’s what this is.

Created: 2009-06-03 10:06:37 MSD (+0400)
Last modified: 2010-08-14 07:15:58 MSD (+0400)
Viewed: 247 times, last viewed: 2016-11-07 01:12:08 MSK (+0300)
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