Observation 204628: Fuscidea recensa (Stirton) Hertel, V. Wirth & Vězda

Images

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Fuscidea_recensa_khitsun_213_532_JH9752_WI.jpg
Copyright © 2015 Jason Hollinger (jason)
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Fuscidea_recensa_khitsun_214_532_JH9752_WI.jpg
Copyright © 2015 Jason Hollinger (jason)

Proposed Names

29% (1)
Recognized by sight
61% (2)
Eye3 Eyes3
Based on chemical features: UV+ white, K- C- KC- P-

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Eye3 = Observer’s choice
Eyes3 = Current consensus

Comments

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Well, I could be totally wrong
By: Jason Hollinger (jason)
2016-01-16 22:59:34 PST (-0800)

It’s very easy to come up with completely incorrect ids using James’s keys — there’s rarely much in the way of verifying details. I’ll be sure to run it by him some day.

Thomson doen’t have this genus at all, Bennett only has Fuscidea pusilla :(
By: Andrew Khitsun (Andrew)
2016-01-16 22:47:34 PST (-0800)
Added two close-up photos
By: Jason Hollinger (jason)
2016-01-16 21:45:02 PST (-0800)

The K reaction is just from the K dissolving the thallus, probably. I got only a UV reaction: K- C- KC- P- UV+ bright white. Using Lendemer’s key to sterile crusts of North America this comes out as either Fuscidea recensa or F. applachensis. The former is much more common on CNALH, if that’s to be trusted. It resembles the photo Lendemer included well enough to be plausible.

Jason, this is #5132015-2
By: Andrew Khitsun (Andrew)
2016-01-16 21:23:40 PST (-0800)
On sandstone in shade
By: Andrew Khitsun (Andrew)
2015-05-20 17:20:33 PDT (-0700)

Thallus white or off-white (when viewed under microscope), but appearing gray overall, covered by soredia in places. Responds to K with some greening-browning. Doesn’t seem to respond to KC or C.

Created: 2015-05-20 17:03:50 PDT (-0700)
Last modified: 2016-01-16 22:42:39 PST (-0800)
Viewed: 80 times, last viewed: 2016-01-17 17:49:22 PST (-0800)
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