*Nasturtium officinale W.T. Aiton. Watercress. Phen: Apr-Jul. Hab: Streams, springs, seepages. Dist: Native of Eurasia.

Origin/Endemic status: Europe

Synonymy ⓘ: = Fl4, FNA7, GrPl, GW2, Il, K3, K4, Mi, NE, NY, Pa, Tat, Tn, Va, WH3, WV, Al-Shehbaz & Price (1998); = Roripa nasturtium (L.) Rusby – S13; = Rorippa nasturtium-aquaticum (L.) Hayek – C, K1, NcTx, Tx, Al-Shehbaz (1988a), Green (1962), Rollins (1993); = Sisymbrium nasturtium-aquaticum L. – S; < Nasturtium officinale W.T.Aiton – G, RAB, W; > Nasturtium officinale W.T.Aiton var. officinale – F; > Nasturtium officinale W.T.Aiton var. siifolium (Rchb.) W.D.J.Koch – F

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Wetland Indicator Status:

• Atlantic and Gulf Coastal Plain: OBL (taxonomic split from wetland indicator species)
• Eastern Mountains and Piedmont: OBL (taxonomic split from wetland indicator species)
• Great Plains: OBL (taxonomic split from wetland indicator species)
• Midwest: OBL (taxonomic split from wetland indicator species)
• Northcentral & Northeast: OBL (taxonomic split from wetland indicator species)

Heliophily ⓘ: 7