I was gonna say there is no number in the left hand column but I realized you must mean in the blue area. That is where I keep links using the custom menu bar and...since I had too many links the lowest part of the blue area was not visible to my eye. Solution: I removed about half of my links and now can see this:
I'm not sure why there is duplicate information appearing both on the white part of the screen and on the blue part of the screen.
I guess it has something to do with that information app box?
Anyway, I finally learned how to find the number for a plant, so thank you very much!