You really should be following Maria Popova’s Tweets, and Brainpicker.
There you’ll learn of this marvelous book:
Brain Pickings: “French photographer Cedric Pollet travels the world to capture this beauty and has documented it in his gorgeous new book, Bark: An Intimate Look at the World’s Trees.”
Look at some of the photos. Wow.
Pollet’s view of the lowly ocotillo:
“Ocotillo tree, a shrub-like plant found in the Southeast United States”
Does one need to have a background in botany to think tree bark is interesting, and even beautiful?
Ms. Popova said Cedric Pollet traveled the world to find these great subjects to photograph. One could do well trying to duplicate his tour.
What trees in your yard have outstanding bark? Where are your photographs?
“Mindanoan gum (or rainbow eucalyptus) found in the Philippines, where the bark is used as a traditional remedy against fatigue”
How often do we see the forest, but miss the details of the trees?
Posted by Ed Darrell 
Millard Fillmore's Bathtub 