Redcurrant, Ribes rubrum Family: Grossulariaceae Pollen grain morphology: tectate, periporate, polygonal Pollen grain size: 23.42 + 0.46 µm by 22.17 + 1.26 µm April 30, 2015grossulariaceae, Uncategorizedgrossulariacae, periporate, polygonal, red currant, redcurrant, ribes, rubrum, tectate