My class this summer was in the Gudbrandsdal style of rosemaling. It's based on wood carvings of the acanthus leaf. The acanathus doesn't grow in Norway but its use as a motif in art came north through Europe till it got to Norway--about as far as it could go.
The acanthus leaf has many lobes and folds, so these flowers and leaves have more depth than other types of rosemaling. It's fun to paint.
These are the practice boards I painted. Now I have to paint some plates.