Lichen

  

Have always heard that if you have lichen growing on your trees or rocks, it indicates that your air quality is good. So I thought I'd look about the yard and see if the air is fresh in Austin, Texas.

  

Alien structures...

And diverse coloration...

Strange protuberances...

And whip-like appendages...

Fireworks displays...

And little flower gardens...

Even the "Octopus' Garden"...

 

And paint-like lichen on bark makes interesting patterns...

I'm thinking the air is just fine down here.