Dictionary.net

• mat-forming lithophytic or terrestrial fern with creeping rootstocks and large pinnatifid fronds found throughout North America and Europe and Africa and east Asia

2006 - WordNet 3.0
By Princeton University

• mat-forming lithophytic or terrestrial fern with creeping rootstocks and large pinnatifid fronds found throughout North America and Europe and Africa and east Asia

2011 - English Dictionary Database
By DataStellar Co., Ltd