Liverworts
Plants with obvious leaves
Leaves not spirally arranged
Leaves without ventral sacs
Leaves not complcate-bilobed or folded
Leaf toothed, lobed or spine-like but shape evident
Underleaves absent
Stems without papillae
Leaves round or lobed
Leaves lobed, toothed or with spine-like hairs
Leaves margins without teeth, or teeth not spine-like
Plant not thread-like