Observation 165376: Parmotrema tinctorum (Delise ex Nyl.) Hale
When: 2014-05-16
No herbarium specimen

Notes: Again on rock, again on limestone most likely. I thought I had collected a small sample but I cannot find it. I might not have!

Proposed Names

11% (2)
Recognized by sight
84% (1)
Recognized by sight: broad ~flat lobes with diffuse fine laminal isidia

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Eye3 = Observer’s choice
Eyes3 = Current consensus


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Yes and yes
By: Jason Hollinger (jason)
2014-05-16 22:39:16 PDT (-0700)

Lichens can grow anywhere! Including other lichens and moss. There are some which grow exclusively on moss or exclusively on other lichens, in fact. But in your case, you’ve got these lovely nutrient-rich calcareous rocks and they just can’t grow fast enough, so there’s intense competition. The looser species will win out in such cases, because they can grow over the more tightly appressed or crustose species.

By: Tim Martin (T Martin2010)
2014-05-16 22:32:05 PDT (-0700)

Interesting. I was wondering, some of these rocks were very thickly encrusted. Can lichen grow on top of lichen? Or moss?

Never seen this grow on rock
By: Jason Hollinger (jason)
2014-05-16 22:19:25 PDT (-0700)

Neat! One of the few (only?) Parmotrema which is recognizable at a glance. Almost all others require chemistry to resolve.

Created: 2014-05-16 20:06:33 PDT (-0700)
Last modified: 2014-05-16 22:20:41 PDT (-0700)
Viewed: 25 times, last viewed: 2016-10-21 04:41:33 PDT (-0700)
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