As nouns the difference between parnassia and parnassian
is that parnassia is (botany) any of the genus (taxlink) of herbaceous dicots while parnassian is (rare) a poet.
As an adjective parnassian is
of or relating to parnassus, as the source of literary (especially poetic) inspiration; (hence) of or belonging to poetry, poetic.
parnassia
English
Noun
(
en noun)
(botany) Any of the genus (taxlink) of herbaceous dicots.