| Perideridia | |
|---|---|
| |
| Perideridia gairdneri subsp. borealis | |
Scientific classification 
| |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Clade: | Asterids |
| Order: | Apiales |
| Family: | Apiaceae |
| Subfamily: | Apioideae |
| Tribe: | Oenantheae |
| Genus: | Perideridia Rchb. |
| Type species | |
| Perideridia americana | |
| Species | |
|
About 12; see text | |
Perideridia is a genus of plants in the family Apiaceae. Plants in this genus are known generally as yampah or yampa. They are native to western North America. Similar in appearance to other plants of the family Apiaceae, they have umbels of white flowers.