We are all lured into guessing where the foraged pollen our bees bring back comes from.  This interactive  pollen chart will give some ideas.
Should you want to make your own slides and truly identify what you have, a quick visit here will help.  Some identification photos or perhaps a key will reveal all.  You will then be a palynologist.

These days a digital camera held above the microscope eyepiece gives very serviceable images that you can further magnify on your computer.  Or perhaps build your own phone microscope.