White Trillium, Trillium grandiflorum Family: Melanthiaceae Pollen grain morphology: monocolpate, irregularily elliptical, intectate, verrucate Pollen grain size: 42.12 ± 0.37 µm by 34.67 ± 1.42 µm June 12, 2015melanthiaceae, Uncategorizedintectate, irregularily elliptical, melanthiaceae, monocolpate, trillium, verrucate, wake-robin