Distribution: Temperate regions of both hemispheres, excl. Africa, many in the temperate and southern Andes. The genus probably needs inclusion in a combined Swertia s. l. (as a section), but the combinations are not available yet.
= Aliopsis Omer & Qaiser; Willdenowia 21(1-2): 190 (1991)
= Amarella Gilib.; Fl. Lit. Inch. 1: 36 (1782), opus utique oppr.
= Arctogentia Á.Löve & D.Löve; Phytologia 50: 172 (1982)
= Chionogentias L.G.Adams; Austral. Syst. Bot. 8(5): 949 (1995)
= Eudoxia D.Don ex G.Don; Gen. Hist. 4: 202 (1837)
= Eyrythalia Reneaulme ex Borkh.; Arch. Bot. (Leipzig) 1(1): 28 (1796), nom. superfl.
= Glyphospermum G.Don; Gen. Hist. 4: 194 (1837)
= Leimanisa Raf.; New Fl. [Rafinesque] 4: 93 (1838)
= Opsantha Delarbre; Fl. Auvergne [Delarbre], éd. 2: 30 (1800)
= Opsanthe Reneaulme ex Fourr.; Ann. Soc. Linn. Lyon, Sér. 2, 17: 120 (1869)
= Oreophylax Á.Löve; Taxon 32: 511 (1983), nomen
= Parajaeschkea Burkill; Rec. Bot. Surv. India 4: 223 (1911)
= Pitygentias Gilg; Bot. Jahrb. Syst. 54(2, Beibl. 118): 90 (1916)
= Pogoblephis Raf.; Fl. Tellur. 3: 26 (1837)
= Ulostoma D.Don; Gen. Hist. 4: 196 (1837)
