Common name: Chinese foxglove
Rehmannia elata is an herbaceous perennial native to China. It is commonly known as Chinese foxglove but it is botanically unrelated. R. elata flowers resemble mimulus or foxgloves. The leaves are scalloped, rough textured, and slightly furry. R. elata spreads by underground runners.
The genus name honours Joseph Rehmann, a German physician and botanist. 'Elata' means 'tall' in reference to its tall flower stems.
Text and photos in Garden by Kumi Sutcliffe
Close-up photo by Salicyna, via Wikimedia Commons