St. John’s Wort, Hypericum perforatum Family: Hypericaeae Pollen grain morphology: tricolporate, prolate, semitectate Pollen grain size: 20.49 µm by 19.76 µm June 10, 2015Hypericaeceae, Uncategorizedhypericaeae, hypericum, perforatum, prolate, semitectate, st. john's wort