Heuchera Purpurea.
Reading edition
Nat. Ord. Saxifragaceæ.
This seems to be a less known or newer variety. If the name has reference to the colour of the foliage, it is not inappropriate. The bold leaves are a dark green, shading to a bronze, then a purple, the whole having a soft downy effect. It is a charming kind.
Cultivation and flowering period, the same as for the Heuchera.