Observation 88768: Xanthoparmelia (Vain.) Hale

When: 2011-07-18

Collection location: Archibald Lake, Oconto Co., Wisconsin, USA [Click for map]

Who: Andrew Khitsun (Andrew)

No specimen available

Proposed Names

86% (1)
Eye3 Eyes3
Recognized by sight

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Eye3 = Observer’s choice
Eyes3 = Current consensus


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Fair enough
By: Jason Hollinger (jason)
2012-03-08 21:39:18 PST (-0800)

Harris was talking about the Ozarks. So maybe X. subramigera is a southern thing. CNALH maps:

X. conspersa
X. plittii
X. subramigera

Wow, complicated. To oversimplify dramatically: conspersa = widespread but most common in east, plittii = widespread but most common in west, subramigera = common only in a few scattered localized areas, not in Great Lakes, maybe tending toward southern.

People can’t settle their differences
By: Andrew Khitsun (Andrew)
2012-03-08 14:01:58 PST (-0800)

According to Thomson, the most common isidiate species around here seem to be X.plittii and X.conspersa. At the time of Thomson’s writing, X.subramigera was only found in two locations in the state, both in the south (the location in question here is up north).

I was wrong (yet again)
By: Jason Hollinger (jason)
2012-03-07 22:12:23 PST (-0800)

I was confusing X. subramigera with another species. I thought it was one of the small-lobed species. According to the Ozarks Flora, X. subramigera is the most common isidiate species in that area. Damn, back to needing K test in the medulla.

Pale lower surface on the bottom photo
By: Andrew Khitsun (Andrew)
2012-03-06 19:51:27 PST (-0800)

For isidiate species, according to J.Thomson “Lichen of WI”, pale lower surface (see the small piece in the middle of the bottom photo) would indicate either Xanthoparmelia plittii or Xanthoparmelia dierythra (The latter I’m not at all familiar with), the only difference being: the former has stictic acid and the latter has norstictic acid (it doesn’t say how one can see the difference). There is also X.subramigera, but I guess it looks slightly different?

Created: 2012-03-06 18:41:33 PST (-0800)
Last modified: 2012-03-06 18:59:54 PST (-0800)
Viewed: 55 times, last viewed: 2017-06-10 08:14:12 PDT (-0700)
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