| 11. | Renner worked with plants from the genus " Oenothera " ( evening primroses ).
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| 12. | "Oenothera " are used as food plants by the larvae of some Lepidoptera species.
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| 13. | His research of hybrid forms of " Oenothera " contributed significantly to the understanding of mutations.
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| 14. | The California population has been recorded from " Epilobium ciliatum " and " Oenothera ".
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| 15. | What it all boils down to is that gardeners need to be a bit selective before introducing Oenotheras to their gardens.
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| 16. | I've added two new Oenotheras to my borders this year and chose them for their drought and pest resistance.
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| 17. | My relationship with the Oenothera genus has been a decidedly on-again, off-again affair over the past 25 years.
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| 18. | Another biennial that I often leave undisturbed, assuming it has chosen an appropriate spot, is the evening primrose ( Oenothera biennis ).
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| 19. | Heribert-Nilsson received his Ph . D . at Lund University in 1915 with the thesis " Die Spaltungserscheinungen der Oenothera lamarckiana ".
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| 20. | The genus " Oenothera " may have originated in Mexico and Central America, and spread farther north in North America and into South America.
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