1. hornworts; liverworts having a thalloid gametophyte; in some classification systems included in the class Hepaticopsida; [syn: Anthocerotales, order Anthocerotales]
WordNet (r) 3.0 (2006):
Anthocerotales
n 1: hornworts; liverworts having a thalloid gametophyte; in
some classification systems included in the class
Hepaticopsida [syn: Anthocerotales, order
Anthocerotales]