Developed by a perfume expert to help retailers and consumers, Edwards's wheel consists of a primary scent family (Woody, Floral, Amber, Fresh.), divided into subfamilies (Floral Amber, Soft Amber, Aromatic, Citrus) . Many of the subfamilies were in turn again divided into Fresh, Crisp, Classical, and Rich composition gradings. Prior to 2010 Fougère group was placed at the center of this wheel. In this classification scheme, Chanel No.5, which is traditionally classified as a "Floral Aldehyde" would be located under Soft Floral sub-group, and "Amber" scents would be placed within the Oriental group. As a class, Chypres are more difficult to place since they would be located under parts of the Oriental and Woody families. For instance, Guerlain Mitsouko, which is classically identified as a chypre will be placed under Mossy Woods, but Hermès Rouge, a chypre with more floral character, would be placed under Floral Oriental. Originally they are: