Black Elderberry, Sambucus nigra Family: Adoxaceae Pollen grain morphology: verrucate, spheroidal, tricolporate Pollen grain size: 30.18 ± 0.82 µm by 25.19 ± 1.08 µm July 27, 2015AdoxaceaeAdoxaceae, elderberry, sambucus, spheroidal, tricolporate, verrucate