Lichen landscape

Lichen on rocks, Saguaro National Park, East
A formation called Javelina Rocks
Tucson, AZ




The source photo

Oh my gosh - that's amazing Elizabeth I do admit to having to check out the name of the banner though
What is the lichen growing on?

It looks like it's growing on a huge tree trunk or even a rock face. In either case though, it's a beautiful and quite unusual banner.

Now there's a blast from the past - Saguaro National Park, not the lichen
We spent a few days in the park, photographing seemingly everything, decades ago.
I think we missed the lichen though

In answer to @Vals_Garden 's question, the lichen was growing on rocks. You can Google Javelina Rocks SNP and read more about their composition, but basically they're a kind of granite. Lichen of various species seem to be able to colonize most kinds of rock, though. I remember being struck at the time by the bright color of this particular kind.

I really enjoy this banner, Elizabeth! Instantly caught my eye.

I'm ga ga for that chartreuse color!

Great banner & image, Elizabeth!

I love lichens, too. So humble & sturdy.
You beat me to it with a banner.

We have some here on our rocks, but there are very colorful ones
in the desert.

Here's a good article on lichens....
https://byjus.com/biology/lich...

Cool banner Elizabeth!

Thanks @EscondidoCal for the link about lichens. I hope you'll submit your own lichen banner, if you haven't already done so. I know what you mean about colorful lichens in the California desert areas. I saw some great examples during my visit to Joshua Tree NP, years ago.