Weed Herbarium – by Scientific Name
Oclemena acuminata | whorled aster | Asteraceae (Compositae) - Aster or Sunflower Family |
Oenothera biennis | common evening primrose | Onagraceae - Evening Primrose Family |
Ornithogalum umbellatum | star-of-Bethlehem | Liliaceae - Lily Family |
Osmorhiza aristata | see - Osmorhiza longistilis | |
Osmorhiza brevistylis | see - Osmorhiza claytoni | |
Osmorhiza claytoni | sweet cicely | Apiaceae (Umbelliferae) - Carrot Family |
Osmorhiza longistilis | aniseroot | Apiaceae (Umbelliferae) - Carrot Family |
Oxalis stricta | yellow woodsorrel | Oxalidaceae - Woodsorrel Family |
Oxalis corniculata | creeping woodsorrel | Oxalidaceae - Woodsorrel Family |