Common mullein, Verbascum thapus Family: Scrophulariaceae Pollen grain morphology: reticulate, tricolporate, tectate Pollen grain size: 23.92 ± 0.46 µm by 20.08 ± 0.22 µm July 27, 2015Scrophulariaceaemullein, reticulate, Scrophulariaceae, tectate, tricolporate