Wordnet 3.0
NOUN (1)
1. 
 type genus of Marchantiaceae; 
 liverworts that reproduce asexually by gemmae and have stalked antheridiophores; 
[syn: Marchantia, genus Marchantia]
The Collaborative International Dictionary of English v.0.48:
Marchantia \Marchantia\ prop. n.
   The type genus of Marchantiaceae; liverworts that reproduce
   asexually by gemmae and have stalked antheridiophores.
   Syn: genus Marchantia.
        [WordNet 1.5]
WordNet (r) 3.0 (2006):
Marchantia
    n 1: type genus of Marchantiaceae; liverworts that reproduce
         asexually by gemmae and have stalked antheridiophores [syn:
         Marchantia, genus Marchantia]