The Collaborative International Dictionary of English v.0.48:

Jungermanniaceae \Jungermanniaceae\ prop. n.
   A natural family of plants comprising the leafy members of
   the order Jungermanniales.

   Syn: family Jungermanniaceae.
        [WordNet 1.5]

WordNet (r) 3.0 (2006):

Jungermanniaceae
    n 1: comprising the leafy members of the order Jungermanniales
         [syn: Jungermanniaceae, family Jungermanniaceae]