*Oxalis triangularis A. Saint-Hilaire. Purple Shamrock. Phen: Apr-May. Hab: Disturbed areas. Dist: Native of Brazil and Argentina. See Serviss, Hardage, & Peck (2021) for discussion of marginal naturalization in AR.
Origin/Endemic status: South America
Synonymy: = FNA12, WH3, Nesom (2009b); > Oxalis triangularis A.St.-Hil. ssp. papilionacea (Hoffmanns. ex Zucc.) Lourteig – K4
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