Chillybean said:I just noticed... these are no longer the genus Gaura? Is this a recent change?
There was a major taxonomic reworking of the Onagraceae family about ten years ago. Several genera, including Gaura, were lumped into the genus Oenothera.
Some sites are holding on to the old names, but both the Catalog of Life (which serves as our primary reference for nomenclature) and ITIS (probably the most rigorous taxonomic source available online, but limited to North America) have adopted the new names.