Lobelia siphilitica Linnaeus. Great Blue Lobelia. Phen: Late Jul-Oct. Hab: Bottomlands, moist forests, ditches, wet meadows, streambanks. Dist: ME, ON, MN, and WY, south to GA, AL, MS, AR, and TX.

Origin/Endemic status: Native

Synonymy: = Ar, K3, K4, Mi, Mo2, Pa, RAB, S, Tn, W, Spaulding & Barger (2016); ~ Lobelia siphilitica L. var. densiflora; > Lobelia siphilitica L. var. ludoviciana – C, F, G, GrPl, GW2, Il, K1, NcTx, Tx, McVaugh (1936a); > Lobelia siphilitica L. var. siphilitica – C, F, G, GrPl, GW2, Il, K1, NE, NY, Va, McVaugh (1936a)

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