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Water Cress: Nasturtium officinale (Synonyms: Rorippa nasturtium-aquaticum, Sisymbrium nasturtium-aquaticum) -
Columbia Cress, Columbia Yellowcress, Columbian Yellowcress: Rorippa columbiae (Synonyms: Rorippa calycina, Rorippa calycina var. columbiae) -
Bluntleaf Yellowcress, Blunt-leaved Yellowcress, Common Yellowcress, Truncate Yellowcress: Rorippa curvipes (Synonyms: Rorippa curvipes var. curvipes, Rorippa curvipes var. truncata)
Curvepod Yellowcress, Western Yellowcress: Rorippa curvisiliqua (Synonyms: Rorippa curvisiliqua var. curvisiliqua, Rorippa curvisiliqua var. lyrata, Rorippa curvisiliqua var. nuttallii, Rorippa curvisiliqua var. orientalis, Rorippa curvisiliqua var. procumbens, Rorippa curvisiliqua var. spatulata) -
Hairy Marsh Yellowcress, Bog Yellowcress, Marsh Yellowcress, Hispid Yellowcress: Rorippa palustris ssp. hispida (Synonyms: Rorippa indica var. hispida, Rorippa palustris var. hispida) -
Smooth Marsh Yellowcress, Western Bog Yellowcress: Rorippa palustris ssp. palustris (Synonyms: Rorippa islandica var. fernaldiana, Rorippa islandica var. glabrata, Rorippa palustris ssp. occidentalis, Rorippa palustris var. glabra, Rorippa palustris var. occidentalis)
Spreading Yellowcress, Western Yellowcress: Rorippa sinuata -
Creeping Yellowcress, Shore Yellowcress: Rorippa sylvestris -
Low Yellowcress, Modoc Yellowcress: Rorippa tenerrima -