He ended his career serving as the Director of the Russian Imperial Botanical Garden of St.

[1] As a result of naturalists and explorers sending back biological collections, Regel was able to describe and name many previously unknown species from frontiers around the world.

In 1855 Regel moved to St. Petersburg, Russia, where he initially worked as a research director and later as senior botanist at the Imperial Botanical Garden.

[6] It is a group of flowering plants in the family Myrtaceae which are endemic to the southwest Australia.

In addition to writing a number of major reference works in botany, he published 3101 articles in academic journals.