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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  Nasturtium microphyllum Boenn. ex Rchb. image
Photographer: Steve C. Garske           

Steve C. Garske
Family Brassicaceae
Nasturtium microphyllum Boenn. ex Rchb.
one-row yellow-cress, watercress
Nasturtium: Latin nasus for “nose” and tortum for “to twist”, referring to the pungent taste
microphyllum: micro for "small;" phyllon for "leaf"
County distribution map- click for detailed distribution maps.
Detailed Distribution:
Town Range Maps
Google Dot Maps
Status: Introduced - adventive
Plant: erect or spreading, perennial, 4"-18" tall, emergent aquatic, sometimes evergreen, forming large, tangled masses; stems spreading; rooting from the lower nodes
Flower: white, 4-parted, 1/5" wide, petals 2 times longer than the sepals; inflorescence a cluster (raceme) of stalked flowers from the ends of the shoots
Fruit:pod, long, thin; coarse seeds in 1 rows
Leaf:pinnately-divided into 3-9 rounded leaflets with the end one longest
Habitat: sun; wet; streams, springs, cold water; in limy, sediment, gravelly soil

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

Flora of North America (off site)
Nasturtium fontanum Asch. var. longisiliquum Irmisch
Nasturtium officinale R.Br. var. microphyllum (Boenn. ex Rchb.) Thell.
Rorippa microphylla (Boenn. ex Rchb.) Hyl. ex A.Löve & D.Löve
Rorippa nasturtium-aquaticum (L.) Hayek var. longisiliqua (Irmisch) B.Boivin

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