This is the reference guide to Colorado cultivated and non-cultivated flora. A pollen grain reference guide can be useful if you are curious what kind of pollen might be causing your allergies or you want to know what flowers your bees are visiting.
Many of the plant families represented in this guide can be found all over the world and even if you are located on another continent you can still use this website.
Search by common name, genus/species or family name. If you are unsure of what type of pollen you have take a look at the pollen morphology guide and match it with the plant family. Unfortunatly if you do not know the specific plant in most cases identification can only be done to the family or genus level.
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