- parnassia, grass-of-Parnassus - any of various usually evergreen bog plants of the genus Parnassia having broad smooth basal leaves and a single pale flower resembling a buttercup
--1 is a kind of marsh plant, bog plant, swamp plant
--1 is a member of genus Parnassia
--1 has particulars: bog star, Parnassia palustris