Euphorbia geyeri Engelmann var. geyeri . Geyer's Sandmat. Phen: Jun-Oct. Hab: Sandy areas, sandbars, disturbed uplands. Dist: MI west to MT, south to MS, LA, TX, and NM.

Origin/Endemic status: Native

Taxonomy Comments: Var. wheeleriana Warnock & M.C. Johnston is restricted to the sw. US and adjacent Mexico; it is likely distinct at specific rank.

Synonymy: = FNA12, K3, K4, Tx; = Chamaesyce geyeri (Engelm.) Small – NcTx; = Chamaesyce geyeri var. geyeri; = Euphorbia geyeri Engelm. – C, F, G, GrPl, Mi; = n/a – Il

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