Image: Oenothera rubricaulis (evening primrose) | CC-PD | Date: 6 July 2014 | Author: George Chernilevsky | Source: Wikimedia Commons in the public domain | https://commons.wikimedia.org/wiki/File:Oenothera_rubricaulis_2014_G1.jpg
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| Image: Oenothera rubricaulis (evening primrose) | CC-PD | Date: 6 July 2014 | Author: George Chernilevsky | Source: Wikimedia Commons in the public domain | https://commons.wikimedia.org/wiki/File:Oenothera_rubricaulis_2014_G1.jpg |