Excited by milky substances?

There are many organisms that one can extract milky substances from, but cactus is NOT one of those. Which is a simple and useful way to figure out if the needly thing in front of you is a cactus or something else….

One response to “Excited by milky substances?

  1. I got a kick out of that post as well. It’s always good to be reminded of examples of convergent evolution!