Observation 211965: Flavopunctelia soredica (Nyl.) Hale
When: 2015-07-30
(43.9919° -103.3197° 1219m)
Who: J-Dar

Notes: Common on Ponderosa Pine (Pinus ponderosa) in coniferous forest habitat.
Thallus yellow-green, wrinkled, with irregularly shaped pseudocyphellae (less prominent than I’d like), soredia laminal from pseudocyphellae and more commonly marginal on underside of lobes. Underside black to pale brown at lobe tips, rhizines black, common in center, sparse at lobes. Thallus K-, C-, KC-. Medulla white, C+R (faint), K-. Apothecia rare but showing on two different specimens, disc rich brown, margin sorediate, C+R. Photos represent several specimens.

Proposed Names

-30% (2)
Used references: Wetmore 2005 (Revised): Keys to the Lichens of Minnesota

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Eye3 = Observer’s choice
Eyes3 = Current consensus


Add Comment
By: J-Dar
2015-08-10 16:56:36 PDT (-0700)

Review of material shows the thallus is maculate, but does not have the distinct round pseudocyphellae as should be for F. flaventior. Nice photo comparison!

These two species always give me trouble
By: Jason Hollinger (jason)
2015-08-08 22:01:51 PDT (-0700)

When they grow side-by-side they are obviously different, but when you’re looking at a single specimen or population, I can always find pseudocyphellae and laminal soredia no matter which species it is. If I start to go down the rabbit hole, I have a photo of typical specimens of both species side by side that I refer to, and it almost always clears it up for me: image 142266

Which is all just a long-winded way of saying that I think these might be F. soredica, not F. flaventior. :)

Note also, while both have been recorded for the Black Hills area, F. soredica is far more common in such dry interior regions.

Created: 2015-08-04 20:18:34 PDT (-0700)
Last modified: 2015-08-10 16:54:06 PDT (-0700)
Viewed: 25 times, last viewed: 2016-10-21 14:51:40 PDT (-0700)
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