Polygonaceae
| Authority | : | Jussieu, 1789 |
| Nederlands | : | Duizendknoopfamilie |
| English | : | knotweed family, buckwheat family |
| Deutsch | : | Knöterichgewächse |
| Eriogonum umbellatum |
| Authority | : | Torrey, 1827 |
| English | : | sulphur buckwheat, sulphur flower, |
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| Coral Pink Sand Dunes (Utah), USA; 10 August 2017. | |