Weed Herbarium – by Scientific Name

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Ranunculus
Ranunculus abortivus smallflower buttercup Ranunculaceae - Buttercup Family
Ranunculus acris tall buttercup Ranunculaceae - Buttercup Family
Ranunculus bulbosus bulbous buttercup Ranunculaceae - Buttercup Family
Ranunculus ficaria lesser celadine Ranunculaceae - Buttercup Family
Ranunculus repens creeping buttercup Ranunculaceae - Buttercup Family
Raphanus
Raphanus raphanistrum wild radish Brassicaceae (Cruciferae) - Mustard Family
Rhinanthus
Rhinanthus crista-galli see - Rhinanthus minor
Rhinanthus minor yellow-rattle Scrophulariaceae - Figwort Family
Rhus
Rhus radicans see - Toxicodendron radicans
Rhus glabra smooth sumac Anacardiaceae - Cashew Family
Rhus typhina staghorn sumac Anacardiaceae - Cashew Family
Robinia
Robinia hispida bristly locust Fabaceae (Leguminosae) - Pea or Bean Family
Rorippa
Rorippa palustris marsh yellowcress Brassicaceae (Cruciferae) - Mustard Family
Rorippa x prostrata prostrate fieldcress Brassicaceae (Cruciferae) - Mustard Family
Rosa
Rosa multiflora multiflora rose Rosaceae - Rose Family
Rubus
Rubus odoratus purple-flowering raspberry Rosaceae - Rose Family
Rubus phoenicolasius wine raspberry wineberry Rosaceae - Rose Family
Rudbeckia
Rudbeckia hirta black-eyed susan Asteraceae (Compositae) - Aster or Sunflower Family
Rumex
Rumex acetosella red sorrel Polygonaceae - Smartweed or Buckwheat Family
Rumex crispus curly dock Polygonaceae - Smartweed or Buckwheat Family
Rumex obtusifolius broadleaf dock Polygonaceae - Smartweed or Buckwheat Family