Broad Leaved Dock, Rumex obtusifolius Family: Polygonaceae Pollen Grain Morphology: Three or four aperatures, narrow furrows, with round pore, coarsely reticulate Pollen Grain Size: 29.3 + 1.5 µm by 27.9 + 1.5 µm February 3, 2015polygonaceae, Uncategorizedbroad-leaved dock, polygonaceae, reticulate, Rumex, Rumex obtusifolius