|Ensatina eschscholtzi oregonensis
(a "morphotype" - see below)
This group does not qualify as a subspecies. Instead, it should be called a "morphotype." According to Stebbins, 2003, "a morphotype is a morphologically recognizable set of populations with a geographic range that may be out of synchrony with taxonomic findings based on molecular evidence. Many "subspecies" have now fallen into this category thus making in such cases, the term inappropriate as an expression of taxonomic relationships. In this definition the term morphology (form) is used in its broadest sense to include not only structure (including color) but sometimes also aspects of behavior and physiology."
(From Robert C. Stebbins, 2003, Western Reptiles and Amphibians, 3rd Edition)