Robert W. Freckmann Herbarium


Because of technology changes and personnel changes at UWSP and the Wisconsin State Herbarium, the database of plant species housed at this site was merged with the database from the OLD WisFlora website to create a new Flora of Wisconsin website at Currently we are encouraging all Wisplant viewers to begin using the Flora of Wisconsin website as soon as possible. Wisplants will remain operational through July 13th. After that date, all traffic to Wisplants will be redirected to the Flora of Wisconsin website.

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  Rorippa sessiliflora (Nutt.) Hitchc. image
Photographer: from USDA Plants website           
Family Brassicaceae
Rorippa sessiliflora (Nutt.) Hitchc.
southern yellow-cress, stalkless yellow-cress
Rorippa: an Anglo-Saxon word rorippen whose meaning has been lost
sessiliflora: Latin meaning "with unstalked or sessile flowers"
County distribution map- click for detailed distribution maps.
Detailed Distribution:
Town Range Maps
Google Dot Maps
Status: Native
Plant: usually erect annual, 8"-16" tall forb, smooth, usually branched
Flower: yellow, 4-parted, no petals, mature stalk less than 1/8" long; inflorescence a cluster (raceme) of stalked flowers; blooms May-Oct.
Fruit:thick pods
Leaf:stalked, lower leaves often pinnately-divided below the middle
Habitat: wet; marshes, shallows

More Information Natural Communities Herbarium Specimens
All Rorippa list Google- Images or Text

Flora of North America (off site)
Nasturtium sessiliflorum Nutt.
Radicula sessiliflora (Nutt.) Greene

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