Jungermannia \Jun`ger*man"ni*a\, prop. n.; pl. {Jungermanni[ae]}. [NL. Named after Ludwig Jungermann, a German botanist.] (Bot.) A genus of hepatic mosses, now much circumscribed, but formerly comprising most plants of the family, which is sometimes therefore called {Jungermanniace[ae]}. [1913 Webster]