Rorippa x prostrata

Common Name: 
prostrate fieldcress, prostrate yellowcress
Scientific Name: 
Rorippa x prostrata (Bergeret) Schinz & Thellung (pro sp.) [sylvestris × amphibia]
Family Name: 
Brassicaceae (Cruciferae) - Mustard Family
Identification Notes
Life Cycle
introduced perennial, reproducing by seed and rhizomes
Stems
upright, branching throughout, smooth and ribbed, green
Stems of Prostrate Fieldcress
Stems of Prostrate Fieldcress
Stems of Prostrate Fieldcress
Stems of Prostrate Fieldcress
Stems of Prostrate Fieldcress
Leaves
alternate, oval to obovate in outline, smooth, upper and lower toothed, lower lobed near leaf base, sessile and with lobed appendages
Leaves of Prostrate Fieldcress
Leaves of Prostrate Fieldcress
Leaves of Prostrate Fieldcress
Flowers
4-petaled, yellow; terminal and axillary racemes
Flowers of Prostrate Fieldcress
Flowers of Prostrate Fieldcress
Flowers of Prostrate Fieldcress
Seed Pods
silicle, cylindrical, oval to oblong
Seedpods of Prostrate Fieldcress