Observation 87452: Punctelia Krog

When: 2009-07-05

Collection location: Parfrey’s Glen State Natural Area, Wisconsin, USA [Click for map]

Who: Andrew Khitsun (Andrew)

No specimen available

Proposed Names

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Three candidates
By: Jason Hollinger (jason)
2012-02-06 21:04:54 PST (-0800)

P. bolliana – C-, pseudocyphellae inconspicuous, very wrinkled, on bark
P. hypoleucites – C+r, conidia 8-18µm, almost exclusively on bark
P. graminicola – C+r, conidia 4-10µm, on bark or (usually) rock

I’m having trouble finding morphological differences between the three. Bruce Ryans calls hypoleucites “±rugose or reticulately ridged” with apothecial margins pseudocyphellate. But it doesn’t mention lack or presence of these characters in graminicola (= semansiana). But it ddoes say that apothecia are abundant in graminicola.

I’m not willing to venture a guess without chemistry and conidia measurement, since all three are well-documented in your area (according to CNALH). We need to build up a better set of observations with solid determinations based on chemistry and microscopy, I think. I would be surprised if there are no subtle morphological clues. But I don’t know what they are yet.

Punctelia hypoleucites?
By: Andrew Khitsun (Andrew)
2012-02-06 16:17:34 PST (-0800)

Created: 2012-02-06 16:11:29 PST (-0800)
Last modified: 2012-02-06 16:15:51 PST (-0800)
Viewed: 48 times, last viewed: 2017-06-10 06:52:59 PDT (-0700)
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