Penstemon grandiflorus Nuttall. Large Beardtongue. Phen: Apr-Jul. Hab: Prairies. Dist: MI, MN, ND, and MT south to nc. TX and NM.
Origin/Endemic status: Native
Synonymy: = F, FNA17, GrPl, K3, K4, Mi, NcTx, NE; = n/a – C; > Penstemon bradburii Pursh – Tx
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