Coltsfoot, Tussilago farfara Family: Asteracae Pollen Grain Morphology: echinate, tricolporate Pollen grain size: 29.71 + 0.57 µm by 27.7 + 0.67 µm April 28, 2015Asteraceae, Uncategorizedasteracae, coltsfoot, echinate, farfara, tricolporate, tussilago