Taxonomic status: Unresolved

homotypic synonyms:
Oenothera cespitosa var. montana (Nutt.) Durand; Oenothera cespitosa Nutt.; Pachylophis cespitosa (Nutt.) Raim.;
heterotypic synonyms:
Pachylophis montanus (Nutt.) A. Nelson;

protologue: N. Amer. Fl., ser. 2 5: 101 (1965)
URL protologue: https://archive.org/stream/#page/101/mode/2up

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