Euphorbia spathulata Lamarck. Prairie Spurge, Warty Spurge. Phen: Mar-Jun. Hab: Rocky woodlands, prairies, disturbed areas. Dist: MN and WA south to w. VA, AL, LA, TX, and n. Mexico (BCN, CHH, COA, DGO, NLE, SON, TAM).

Origin/Endemic status: Native

Synonymy: = Ar, C, Fl2, GrPl, Il, Mex, Mi, NcTx, Tn, Tx, Va, W, WH3, Ward (2023) in Weakley et al (2023); = n/a – RAB; > Euphorbia dictyosperma Fisch. & Meyer – F, G; < Euphorbia spathulata Lam. – FNA12, GrPl, K1, K3, K4, Govaerts, Frodin, & Radcliffe-Smith (2000); > Galarhoeus arkansanus (Engelm. & A.Gray) Small ex Rydb. – S; > Tithymalus arkansanus (Engelm. & A.Gray) Klotzsch & Garcke – S13; > Tithymalus missouriensis (Norton) Small – S13

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Wetland Indicator Status:

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

Heliophily ?: 8