Larkspur, Delphinium elatum Family: Ranunculaceae Pollen grain morphology: Trizonocolpate, echinate Pollen grain size: 28.34 ± 1.76 µm by 25.31 ± 3.42 µm May 1, 2015Ranunculaceae, Uncategorizeddelphinium, echinate, elatum, larkspur, Ranunculaceae, trizonocolpate