There are cacti near Winslow, Arizona. Sneaky ones. There will be one or two sitting by the road, mixed in with the desert scrub, and then none for a big, long stretch. Prickly pears don't count. These are little barrel things. Adorable. They make you work for the pleasure of seeing them.
Ephedra is another adorable denizen of the Arizona desert. It's known as Mormon Tea because people used to brew it and drink it. Now ephedra dietary supplements are banned because they tend to kill people. The ephedrine is nice, though. These plants look a bit like horsetails, but grow in bushes. And now you know.
Yumichika and Ikkaku didn't pay much attention to the plants, of course. Not many people do. But they're there, nonetheless. Watching. Waiting.