Polygonum amphibium
L.
var. emersum
Michx.
Kelp, Longroot smartweed, Swamp knotweed, Water smartweed
Not an active name
Polygonum amphibium var. emersum is a perennial herb (aquatic) that is native to California, and also found elsewhere in North America and beyond.
New name: Persicaria amphibia
Persicaria amphibia var. emersaPLANTS
Persicaria amphibiaPLANTS
Persicaria coccineaPLANTS
Persicaria muehlenbergiiPLANTS
Polygonum amphibium var. coccineumPLANTS
Polygonum coccineum var. pratincolaPLANTS
Polygonum coccineum var. terrestrePLANTS
Polygonum coccineumPLANTS
Polygonum muehlenbergii var. terrestrePLANTS
Polygonum muehlenbergiiPLANTS
Persicaria amphibiaJEPS
Bloom Period
The blue points on the map indicate observations in Calflora.
Click on the map to view observations within a specific county.
Click on the map to view observations within a specific county.
wetland-riparian
