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A revision of taxonomic relation between Oenothera royfraseri and O. turoviensis (sect. Oenothera, subsect. Oenothera; Onagraceae) based on multivariate analyses of morphological characters

. Phytotaxa. 435, 2 (Mar. 2020), 164–180. DOI:https://doi.org/10.11646/phytotaxa.435.2.4.