Which parts of the world have the most Gentiana and Gentianella species?

The greatest number of Gentiana and Gentianella species are found in the northern temperate region, which accounts for approximately 600 species combined.1

While these plants are distributed worldwide, they are particularly notable features of temperate and alpine regions, including Europe, Asia, North and South America, and New Zealand. They are especially well-adapted to mountain environments, where they can access underground water during the summer and benefit from snow cover in the winter.2

Although the northern temperate zone holds the highest concentration of these specific species, it is worth noting that the Gentianaceae family as a whole exhibits its greatest genus-level, genetic, and morphological diversity within tropical and subtropical regions.1