Observation 220832: Acarospora schleicheri (Ach.) A. Massal.

When: 2015-10-26

Collection location: Red Hill Rd., Los Padres National Forest, San Luis Obispo Co., California, USA [Click for map]

35.4026° -120.2787° 608m

Who: J-Dar

Specimen available

Dry open oak woodland-scrubland interface with patches of bare rocky red soil partially vegetated with mosses and terricolous lichens.

Thallus yellow, areolate, C-, K-, KC-, UV+Orange. Thallus deeply attached to soil with pseudorhizines, and thick layer of rhizohyphae at soil surface just beneath thallus (if I’m reading the morphology right).



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Same location as
By: J-Dar
2015-10-28 21:22:31 CDT (-0400)

Acarospora thelococcioides Observation 199954

I would guess that these are recovering populations of terricolous lichens, after many decades of off-roading, shotgun target practice and such. It is now barricaded from vehicles.

Yes, what a beautiful specimen!
By: Jason Hollinger (jason)
2015-10-28 11:10:07 CDT (-0400)

I’m told that it is evidence of late-successional soil crusts: Cyanobacteria and actinomycetes come first to stabilize the soil, followed by opportunistic species like Placidium and Collema, then finally you get beautiful species like Acarospora schleicheri, Squamarina, Fulgensia, etc. Or something like that. ;)

Yeah, the magnificent …
By: zaca
2015-10-28 05:48:23 CDT (-0400)

asci full of spores.
I just observed this species twice at the same place and, meanwhile, its habitat was destroyed.

I’ll update this observation
By: J-Dar
2015-10-27 21:56:05 CDT (-0400)

with some micro photos later this week hopefully. Anything in particular that you would want to see to be more confident with the ID?

Yes, could well be it …
By: zaca
2015-10-27 20:03:58 CDT (-0400)

Another one to join the list for microscopy. Good luck!

Created: 2015-10-27 19:46:43 CDT (-0400)
Last modified: 2015-10-28 10:56:16 CDT (-0400)
Viewed: 62 times, last viewed: 2018-05-07 15:45:48 CDT (-0400)
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