Lysimachia quadrifolia Linnaeus. Whorled Loosestrife. Phen: May-Aug; Aug-Oct. Hab: A wide variety of forests and openings, including pine savannas of the outer Coastal Plain, ranging from moist to very dry. Dist: ME west to WI and MN, south to SC, c. GA, AL, and TN.

ID notes:Although the species normally has whorled leaves, immature and small plants often have opposite leaves only. See L. fraseri for discussion of vegetative features useful in distinguishing the two species.

Origin/Endemic status: Native

Taxonomy Comments: L. ×radfordii H.E. Ahles, a hybrid of L. loomisii × quadrifolia, is morphologically intermediate between its parents.

Synonymy: = C, F, FNA8, G, GW2, Il, K1, K3, K4, Mi, NE, NY, Pa, RAB, S, Tn, Va, W, WV

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