Notes: This is the first observation from this location. The genus Caloplaca is the most common here and I sure that several species are present. The object of this observation is a specimen that I bilieve to belong to the species :C. saxicola, although I not sure. The last photograph attached includes the specimens above (at the top) but has other(s) species, and I think that some of them (the ones from bellow) can be classified as C. flavescens.
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I’ve seen (only once) something similar, where calciphiles (e.g., Caloplaca and Collema) were growing on basalt which was enriched by nearby limestone. Volcanic rocks broadly speaking are fairly neutral (I find them particularly rich in lichens usually). Compare with granite (acidic). Thanks for the info!
The place of the observation is of volcanic origin (see the notes on the location) that is inserted into an area of calcareous origin. Can therefore be mixed, but I believe that these specimens in particular were placed at the volcanic part.
Do you happen to know if these are on limestone?
Created: 2011-04-18 17:42:28 CDT (-0400)
Last modified: 2011-04-18 18:14:55 CDT (-0400)
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