Blasiaceae
Blasiaceae is a family of liverworts with only two species: Blasia pusilla (a circumboreal species) and Cavicularia densa (found only in Japan). The family has traditionally been classified among the Metzgeriales, but molecular cladistics suggests a placement at the base of the Marchantiopsida. References

External links 
 Liverwort Tree of Life 
 Simplified phylogeny of the liverworts 

Liverwort families
Blasiales