Parasponia

Classification System: APG IV

Superregnum: Eukaryota
Regnum: Plantae
Cladus: Angiosperms
Cladus: Eudicots
Cladus: Core eudicots
Cladus: Rosids
Cladus: Eurosids I
Ordoo: Rosales

Familia: Cannabaceae
Genus: Parasponia
Species: P. andersonii – P. melastomatifolia – P. parviflora – P. rigida – P. rugosa
Name

Parasponia Miq. is unresolved as either an accepted name or synonym of Trema. However, the ability of the genus to form associations with Rhizobium in order to fix nitrogen is unique in the family and can form a legitimate basis for segregation.
References

USDA, ARS, Germplasm Resources Information Network. Parasponia in the Germplasm Resources Information Network (GRIN), U.S. Department of Agriculture Agricultural Research Service. Accessed: 09-Oct-10.