Knowledge Library
Every approved identification in the PollyMap network rolls up into a living knowledge page. Galleries and state coverage update automatically.
pollenChenopod43 verified specimens · 1 location
pollenPoaceae32 verified specimens · 1 location
pollenAsteraceae29 verified specimens · 1 location
pollenArtemisia21 verified specimens
pollenOak21 verified specimens · 1 location
pollenPine16 verified specimens · 1 location
pollenGrass11 verified specimens · 1 location
pollenUnknown9 verified specimens · 1 location
pollenjuniper7 verified specimens · 1 location
pollenunidentified6 verified specimens · 1 location
pollenCeltis5 verified specimens
pollenCannabis4 verified specimens
pollenMesquite4 verified specimens · 1 location
pollenAsteraceae (low spine)3 verified specimens
pollenElm (Ulmus)3 verified specimens · 1 location
pollenfern spore3 verified specimens
pollenHackberry3 verified specimens · 1 location
pollenMulberry3 verified specimens · 1 location
pollenEucalyptus2 verified specimens · 1 location
pollenNettle2 verified specimens · 1 location
pollenOlive2 verified specimens · 1 location
pollenPine (Pinus spp.)2 verified specimens · 1 location
pollenSmartweed2 verified specimens
pollenUrticaceae2 verified specimens
pollenAstareceae1 verified specimen
pollenAster/Daisy (Asteraceae)1 verified specimen · 1 location
pollenAsteraceae (high spine)1 verified specimen
pollenAstereacea1 verified specimen · 1 location
pollenAstereceae1 verified specimen
pollenAstereceae (artemisia)1 verified specimen
pollenAstereceae (low spine)1 verified specimen
pollenBuckwheat1 verified specimen · 1 location
pollenChenopod Amaranthus1 verified specimen
pollenCorn (Zea mays)1 verified specimen
pollenElm1 verified specimen · 1 location
pollenEnglish plantain1 verified specimen
pollenEphedra1 verified specimen · 1 location
pollenFabaceae1 verified specimen · 1 location
pollenJuniper/Cupressaceae1 verified specimen
pollenMaple1 verified specimen · 1 location
pollenMaple (Acer spp.)1 verified specimen · 1 location
pollenMormon Tea1 verified specimen · 1 location
pollenOak (Quercus)1 verified specimen · 1 location
pollenOlive (Olea) / Oleaceae1 verified specimen · 1 location
pollenPalm1 verified specimen · 1 location
pollenPalo Verde1 verified specimen · 1 location
pollenPlantain1 verified specimen · 1 location
pollenPoaeceae1 verified specimen
pollenSalix1 verified specimen · 1 location
pollenSunflower family (Asteraceae)1 verified specimen
pollenSweetgum1 verified specimen · 1 location
pollenUnknown Pollen (possibly Grass/Poaceae)1 verified specimen · 1 location
pollenWalnut1 verified specimen · 1 location
- Microscope image
coming soonpollenRagweed PollenAmbrosia artemisiifoliaA single ragweed plant can release a billion grains of pollen. Light, buoyant grains can travel 400+ miles, making ragweed the dominant fall allergen across America.