Red elderberry, Sambucus racemosa Family: Adoxaceae Pollen grain morphology: spheroidal, long furrows, verrucate membranes, reticulate, semitectate Pollen grain size: Equatorial: 18.65 + 0.68 µm by 17.45 + 0.60 µm Polar:18.15 µm by 18.1 µm April 29, 2015Adoxaceae, Uncategorizedadoxaecae, elderberry, racemosa, reticulate, sambucus, semitectate, spheroidal, verrucate membranes