mossgeek 的最愛

Is this multiple lichen species or 1?
These lichens are growing on the trunk of a watered Coast Live Oak. This portion of lichen seemed wet, as if watered. Photo 7 shows the wet spot on the tree.

Host plant: https://www.inaturalist.org/observations/238731859

I posted the bright yellow lichen separately: https://www.inaturalist.org/observations/238739909

Photos 1-6 were edited to have an Auto White Balance in Photoshop (Photoshop's preset).

VERY tentative. This is partly based on the 2nd photo where the brown lichens appear to be Protoparmeliopsis muralis (Stonewall rim lichens).

Because it’s much browner, I’m choosing L. mellea, see Sharnoff, p. 291

@mossgeek, @j-dar: Any suggestions?

One of several different-looking lichen patches seen on rocks in the same small area.
See also: 195993402, 195993404, 195993405

This bluish-gray crust was growing on sandy soil in abundance and I collected some thalli with a permit. The areoles are somewhat swollen and irregular and about 1 mm in diameter. The lecanorine apothecia are pale tan and, in some of the larger ones, become irregular thickened. The epihymenium is brown and the spores are hyaline, 8/ascus, simple, thin-walled and about 12 x 5 microns on average. The apothecia is K negative and the brown epihymenium dissolves in K.

Disclaimer: This observation includes ALL the photographs I intended to take of this particular organism. That may NOT include images of the entire organism, all of its defining characteristics, or the general area in which it was found. I am already aware that this may reduce the likelihood of a species level identification.