APIACEAE

Eryngium yuccifolium Michaux var. yuccifolium . Northern Rattlesnake-master. Phen: Jun-Aug. Hab: Diabase barrens and glades, olivine barrens, pine savannas, pine flatwoods over loamy or clay soils, prairies, other open sites with at least periodic moisture, generally in sites showing some prairie affinities. Dist: Widespread in southeastern and midwestern North America, the exact range limits of the typic variety and var. synchaetum somewhat obscure; probably distributed from NJ, OH, s. MI, WI, MN, and NE south to Panhandle FL, AL, MS, n. LA, and e. TX.

Origin/Endemic status: Native

Syn: = K1, K3, K4, MC, NE, RAB, Tx, Va, Bell (1963); = Eryngium aquaticum – S, misapplied; < Eryngium yuccifolium – Ar, C, F, Fl7, G, GrPl, GW2, Il, Mi, Mo2, NcTx, Tn, W, WH3

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