North America (north of Mexico) share many gentian genera with Asia and Europe, and some also occur in Latin America.  North America has no endemic tribes or subtribes.  For gentians from tropical Mexico, see gentians of Latin America.

This page is under construction.

Bartonia

Species total/North America: 4/4.  Distribution: USA (temperate). Tribe: Gentianeae-Swertiinae.

Centaurium

Species total/North America: 50/?.  Distribution: USA + worldwide (temperate, subtropical, tropical). Tribe: Chironieae - Chironiinae.

Cicendia

Species total/North America: 2/1.  Distribution: USA (California) + Chile and the Mediterranean (temperate and subtropical). Tribe: Chironieae-Chironiinae.

Eustoma

Species total/North America: 3/?.  Distribution: USA (subtropical). Tribe: Chironieae-Chironiinae.

Frasera

Species total/North America: 15/?.  Distribution: USA (subtropical, temperate). Tribe: Gentianeae-Swertiinae.

Geniostemon

Species total/North America: 5/?.  Distribution: Mexico, USA (subtropical). Tribe: Chironieae-Chironiinae.

Gentiana

Species total/North America: 360/?.  Distribution: worldwide (temperate, tropical mountains). Tribe: Gentianeae-Gentianinae. 

Gentianella

Species total/North America: 250/?.  Distribution: worldwide (temperate, tropical mountains). Tribe: Gentianeae-Swertiinae.

Gentianopsis

Species total/North America: 16-24/?.  Distribution: North America, Europe (temperate, tropical mountains). Tribe: Gentianeae-Swertiinae.

Halenia

Species total/Latin America: 80/?.  Distribution: Asia, North and South America (temperate, tropical mountains). Tribe: Gentianeae-Swertiinae.

Lomatogonium

Species total/Latin America: 21/?.  Distribution: USA (temperate, tropical mountains). Tribe: Gentianeae-Swertiinae.

Obolaria

Species total/ North America: 1/1.  Distribution: USA (temperate, tropical mountains). Tribe: Gentianeae-Swertiinae.

Sabatia

Species total/North America: 20/?.  Distribution: USA (temperate, tropical mountains). Tribe: Chironieae-Chironiinae.

Swertia

Species total/ North America: 135/?.  Distribution: XXX (temperate, tropical mountains). Tribe: Gentianeae-Swertiinae.

Voyria

Species total/North America: 19/?.  Distribution: USA (Florida), Latin America (tropical, subtropical). Tribe: incertae sedis (not classified).

The classification follows Struwe & Albert (2002).

Floras