Polygonaceae
| Authority | : | Jussieu, 1789 |
| Nederlands | : | Duizendknoopfamilie |
| English | : | knotweed family, buckwheat family |
| Deutsch | : | Knöterichgewächse |
| Eriogonum racemosum |
| Authority | : | Nuttall, 1847 |
| English | : | redroot buckwheat, red-root wild buckwheat |
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| Grand Canyon northern rim (Arizona), USA; 7 August 2017. | ||