1) Hepaticae 
Jungermanniales is the largest order of liverworts. They are distinctive among the liverworts for having thin leaf-like flaps on either side of the stem. Most other liverworts are thalloid, with no leaves. == Families of Jungermanniales == ...
(from the article `bryophyte`) ...irregularly; widely distributed throughout the world; approximately 30 genera and 550 species; sometimes the order Treubiales is separated from ...
[n] - large order of chiefly tropical liverworts