Ray's work on plant taxonomy spanned a wide range of thought, starting with an approach that was predominantly in the tradition of the herbalists and Aristotelian, but becoming increasingly theoretical and finally rejecting Aristotelianism. Despite his early adherence to Aristotelian tradition, his first botanical work, the "Catalogus plantarum circa Cantabrigiam nascentium" (1660), was almost entirely descriptive, being arranged alphabetically. His model was an account by Bauhin of the plants growing around Basel in 1622 and was the first English county flora, covering about 630 species. However at the end of the work he appended a brief taxonomy which he stated followed the usage of Bauhin and other herbalists.