Swertia perennis (Star Gentian)
Gentianaceae (Gentian Family)

Montane, subalpine.  Wetlands.  Summer, fall.

Emanuel Sweert was a 16th century Dutch botanist. "Perennis" is Latin for "through the year, perennial".  This plant was first collected in Bavaria in the mid-1700s and was named by Linnaeus in 1753.