Tall hawkweed, Hieracium piloselloides Family: Asteracae Pollen grain morphology: echinate Pollen grain size: 26.76 + 1.32 µm by 23.39 + 1.6 µm April 29, 2015Asteraceae, Uncategorizedasteracae, echinate, hieracium, piloselloides, tall hawkweed