from The Century Dictionary and Cyclopedia
- An order of cryptogamic plants of the phylum Bryophyta, class Hepaticæ, coextensive with the family Anthocerotaceæ, and regarded as intermediate between the Marchantiales and the Jungermanniales.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. hornworts; liverworts having a thalloid gametophyte; in some classification systems included in the class Hepaticopsida
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