Family: Brassicaceae
watercress
[Nasturtium nasturtium-aquaticum (L.) H.Karst., more...]
Christopher Noll
University of Wisconsin-Stevens Point, Robert W. Freckmann Herbarium (UWSP)
Etymology: Nasturtium: Latin nasus for “nose” and tortum for “to twist”, referring to the pungent taste
Plants: erect or spreading, perennial, 4"-18" tall, emergent aquatic, sometimes evergreen, forming large, tangled masses; stems spreading; rooting from the lower nodes
Leaves: pinnately-divided into 3-9 rounded leaflets with the end one longest
Flowers: 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
Fruits: pod, long, thin; coarse seeds in 1 rows
Habitat: sun; wet; streams, springs, cold water; in limy, sediment, gravelly soil
Plants: erect or spreading, perennial, 4"-18" tall, emergent aquatic, sometimes evergreen, forming large, tangled masses; stems spreading; rooting from the lower nodes
Leaves: pinnately-divided into 3-9 rounded leaflets with the end one longest
Flowers: 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
Fruits: pod, long, thin; coarse seeds in 1 rows
Habitat: sun; wet; streams, springs, cold water; in limy, sediment, gravelly soil
Floristic Rating: Wetland Indicator = OBL USDA Plants Database: Federal Distribution and detailed information including photos
Merel R. Black
Matthew L. Wagner
Robert W. Freckmann
Steve C. Garske
Merel R. Black
Richard Bauer
Paul Skawinski
Christopher Noll
Merel R. Black
Derek Anderson
Kurt Stüber
Marion Sheehan
