Swertia


Swertia is a genus in the gentian family containing plants sometimes referred to as the felworts. Some species bear very showy purple and blue flowers. Many members of this genus have medicinal and cultural purposes.
Plants of genus Frasera are sometimes considered part of this genus, sometimes as a separate genus, and sometimes as synonymous.

Selected species

Species in the genus Swertia include, but are not limited to:
Swertia contains the chemicals sawertiamarine, mangeferin and amarogenitine 1,5,8-trihydroxy-3-methoxyxanthone, 1-hydroxy-2,3,5,7-tetramethoxyxanthone, 1-hydroxy-3,5,8-trimethoxyxanthone, 1-hydroxyl-2,3,4,6-tetramethoxyxanthone, 1-hydroxy-2,3,4,7-tetramethoxyxanthone, 1,8-dihydroxy-3,5-dimethoxyxanthone, 1,7-dihydroxy-3,8-dimethoxyxanthone, 1,3,5,8-tetrahydroxyxanthone, balanophonin, oleanolic acid, maslinic acid, and sumaresinolic acid. Swerilactones from Swertia mileensis showed anti-hepatitis B virus activity in vitro.

Traditional medicine

Swertia is used in Indian Ayurvedic Herbal System to cure Fever as in Laghu sudarshana churna, Maha sudarshan Churna and in Tibetan folk medicine. It is also one of most widely used medicinal plants of Sikkim, and is considered Vulnerable based on IUCN CAMP Criteria.