Rorippa

Rorippa is a genus of flowering plants in the family Brassicaceae, native to Europe through central Asia, Africa, and North America. Rorippa species are annual to perennial herbs, usually with yellow flowers and a peppery flavour. They are known commonly as yellowcresses.

Rorippa formerly included several species of watercress, now placed in the genus Nasturtium. In particular, R. nasturtium-aquaticum (now N. officinale) and R. microphylla (now N. microphyllum) are often referred to as species of Rorippa.

There are about 75 to 85 species in the genus.

Species include:
 * Rorippa alpina (S.Wats.) Rydb. – alpine yellowcress
 * Rorippa amphibia (L.) Bess. – great yellowcress
 * Rorippa aquatica – lakecress
 * Rorippa austriaca (Crantz) Bess. – Austrian yellowcress, Austrian fieldgrass
 * Rorippa backeri (O.E. Schulz) B. Jonsell
 * Rorippa barbareifolia (DC.) Kitagawa – hoary yellowcress
 * Rorippa benghalensis
 * Rorippa calycina (Engel.) Rydb. – persistent-sepal yellowcress
 * Rorippa cantoniensis – Chinese yellowcress
 * Rorippa columbiae (Suksd. ex B.L.Rob.) Suksd. ex Howell – Columbian yellowcress, Columbia watercress
 * Rorippa crystallina – MacKenzie River yellowcress
 * Rorippa curvipes Greene – bluntleaf yellowcress
 * Rorippa curvisiliqua (Hook.) Besser ex Britton – curvepod yellowcress, western yellowcress
 * Rorippa divaricata
 * Rorippa dubia
 * Rorippa elata
 * Rorippa globosa – globe yellowcress
 * Rorippa icarica Rech.f.
 * Rorippa indica Hiern. – variableleaf yellowcress
 * Rorippa intermedia – intermediate yellowcress
 * Rorippa islandica – northern yellowcress, northern marsh yellowcress
 * Rorippa laciniata
 * Rorippa microtitis – Chihuahuan yellowcress
 * Rorippa palustris (L.) Bess. – common yellowcress, yellow watercress, marshcress
 * Rorippa portoricensis – Puerto Rico yellowcress
 * Rorippa ramosa – Durango yellowcress
 * Rorippa sarmentosa (G.Forst. ex DC) J.F.Macbr. – longrunner
 * Rorippa sessiliflora – stalkless yellowcress
 * Rorippa sinuata (Nutt.) Hitchc. – spreading yellowcress, west yellowcress
 * Rorippa sphaerocarpa (A.Gray) Britton – roundfruit yellowcress
 * Rorippa subumbellata Rollins – Tahoe yellowcress, Lake Tahoe yellowcress
 * Rorippa sylvestris (L.) Bess. – creeping yellowcress, yellow fieldcress, keek
 * Rorippa tenerrima – Modoc yellowcress
 * Rorippa teres – southern marsh yellowcress