Observation 193518: Lecanora muralis (Schreber) Rabenh.

When: 2014-12-14

Collection location: Atascadero, California, USA [Click for map]

35.4515° -120.6439° 288m

Who: J-Dar

No specimen available

On old ranch fence post.

Proposed Names

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Recognized by sight

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Eye3 = Observer’s choice
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This usually grows on rock
By: Jason Hollinger (jason)
2014-12-20 19:40:01 CST (-0500)

And it should be pretty common on rock throughout the region. (I’ve found tons in the Santa Monica and San Gabriel Mts, for example.) But old weathered wood, especially when it gets covered with mineral dust over time, especially in dry regions, can act sufficiently rock-like to get saxicoles to grow on wood.

By: J-Dar
2014-12-20 19:16:40 CST (-0500)

I uploaded 2 more photos from today, light rain, to see if the apothecia colors were any different. Not really. They are a darker hue of blue-green than the rest of the lichen body, definitely not brown or black though. This lichen is uncommon here, I can only find this one spot on all the ranch posts around.

Unusual location for this species (If I’m right)
By: Jason Hollinger (jason)
2014-12-20 15:48:07 CST (-0500)

It looks like Physcia or Dirinaria or Pyxine… but those species both have dark brown to black apothecia, even when wet. (Pyxine also has lecideine apothecia, not lecanorine.) The only thing I can think of that comes close is Lecanora or maybe Lobothallia. The only Lecanora in s. CA with such well-developed lobes is L. muralis. Lobothallia would never be so blue.

Created: 2014-12-14 20:49:48 CST (-0500)
Last modified: 2014-12-20 18:55:28 CST (-0500)
Viewed: 33 times, last viewed: 2017-07-03 20:20:10 CDT (-0400)
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