''Parogonum'' is a genus of

flowering plant Flowering plants are plants that bear flowers and fruits, and form the clade Angiospermae (). The term angiosperm is derived from the Ancient Greek, Greek words (; 'container, vessel') and (; 'seed'), meaning that the seeds are enclosed with ...

s in the family

Polygonaceae The Polygonaceae are a Family (biology), family of flowering plants known Common name, informally as the knotweed family or smartweed—buckwheat family in the United States. The Botanical name, name is Basionym, based on the genus ''Polygonum'', ...

. It includes two species, one native to eastern North America and the other to central China. *'' Parogonum ciliinode'' – central and eastern Canada to the eastern United States *'' Parogonum cynanchoides'' – central China and Tibet

References

{{Polygonaceae-stub Polygonaceae Polygonaceae genera