Weed Herbarium – by Scientific Name

A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z | ALL
Oclemena
Oclemena acuminata whorled aster Asteraceae (Compositae) - Aster or Sunflower Family
Oenothera
Oenothera biennis common evening primrose Onagraceae - Evening Primrose Family
Ornithogalum
Ornithogalum umbellatum star-of-Bethlehem Liliaceae - Lily Family
Osmorhiza
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
Oxalis stricta yellow woodsorrel Oxalidaceae - Woodsorrel Family
Oxalis corniculata creeping woodsorrel Oxalidaceae - Woodsorrel Family