The Collaborative International Dictionary
Mariet
Mariet \Mar"i*et\, n. [F. mariette, prop. dim. of Marie Mary.] (Bot.) A kind of bellflower, Companula Trachelium, once called Viola Mariana; but it is not a violet.
Wiktionary
mariet
n. (context botany dated English) A kind of bellflower, ''Campanula trachelium''.