Observation 109524: Peltigera praetextata (Flörke ex Sommerf.) Zopf
When: 2012-08-07
Herbarium specimen reported

Proposed Names

18% (2)
Recognized by sight
92% (2)
Eye3 Eyes3
Used references: ID confirmed by Jason Hollinger

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Eye3 = Observer’s choice
Eyes3 = Current consensus

Comments

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Door County
By: Jason Hollinger (jason)
2012-09-12 23:41:20 PDT (-0700)

No question! What an amazing place that is. And discovering yet more variation in P. praetextata won’t make me lose any sleep. Let the molecular guys work that one out. (And let’s just hope the results aren’t too unpalatable…)

I based my initial visual ID on those apothecia and heavy lobules.
By: Andrew Khitsun (Andrew)
2012-09-12 18:21:10 PDT (-0700)

But tomentum is clearly here, meaning P.praetextata. Interstingly, the latter doesn’t usually have lobules this heavy in my area around Madison (or at all for that matter), and definitely different-looking apothecia. But Door County is its own domain with its own microclimate and soils. That’s probably what’s responsible for these differences.

I was all ready to go along with you, too!
By: Jason Hollinger (jason)
2012-09-12 17:48:29 PDT (-0700)

The apothecia are remarkably flat, aren’t they?

I thought at first it was P. elisabethae
By: Andrew Khitsun (Andrew)
2012-09-12 16:54:51 PDT (-0700)

But upper surface tomentose towards tips. Regeneration lobules isidia-like. Lower surface has distinctive dark veins, with large white interspaces between them, all white towards the edges. The rhizines are simple or, more often, splitting (fasciculate?).

Created: 2012-09-12 16:43:14 PDT (-0700)
Last modified: 2015-12-27 16:37:36 PST (-0800)
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