Oxalis stricta Linnaeus. Common Yellow Wood-sorrel. Phen: May-Oct. Hab: Disturbed areas, also in a variety of natural habitats. Dist: Widespread in North America south to n. Mexico, now widespread nearly worldwide.

Origin/Endemic status: Native

Synonymy: = Ar, C, FNA12, Il, K1, K3, K4, Mex, Mi, NE, NY, Pa, RAB, Tat, Tn, Tx, Va, W, WV, Eiten (1963), Robertson (1975), Ward (2004a); = Oxalis europaea Jord. – G; < Oxalis corniculata L. – WH3; > Oxalis europaea Jord. var. bushii (Small) Wiegand – F; > Oxalis europaea Jord. var. europaea – F; < Oxalis stricta L. – NcTx; > Xanthoxalis bushii Small – S, S13; > Xanthoxalis cymosa (Small) Small – S, S13; > Xanthoxalis interior Small – S13; > Xanthoxalis rufa Small – S, S13; > Xanthoxalis stricta (L.) Small – S, S13

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Wetland Indicator Status:

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

Heliophily ?: 7