FIGURE 7 in A revision of taxonomic relation between Oenothera perangusta and O. ersteinensis (Onagraceae) based on morphometric research and statistical analyses

FIGURE 7. Two-dimensional ordination diagram of correspondence analysis (CA) along CA1 and CA2, based on all qualitative characters. Full diamonds refer to O. biennis specimens and empty triangles to O. oakesiana individuals. Holotypes of O. perangusta (Pe), O. perangusta var. rubricalyx (Pr), and the paratype of O. ersteinensis (Er) are marked with full square, empty diamonds, and empty circle, respectively.