NARROW-FRUITED WATERCRESS

ONE-ROWED WATERCRESS

Nasturtium microphyllum

formerly: Rorippa microphylla
Cabbage [Brassicaceae]

month8may month8jun month8june month8jul month8july month8aug month8sep month8sept month8oct

flower
flower8bicolour
 		 flower
flower8white
 		 inner
inner8yellow
 		 morph
morph8actino
 		 petals
petalsZ4
 		 stem
stem8round
 		 stem
stem8hollow
hollow

22nd June 2010, Cark, Cumbria. Photo: © RWD
A tangle of water-plants deep in a ditch.


22nd June 2010, Cark, Cumbria. Photo: © RWD
Flowers 4-petalled and white with long, curved upwards and narrow seed pods on long stalks.


22nd June 2010, Cark, Cumbria. Photo: © RWD
Flowers gathered at the top in flattish or slightly rounded 'umbels'. Has larger petals than does Watercress. Purplish pods growing from centre.


22nd June 2010, Cark, Cumbria. Photo: © RWD
Flowers white with four petals tapering at their bases. Usually six stamens.


22nd June 2010, Cark, Cumbria. Photo: © RWD


22nd June 2010, Cark, Cumbria. Photo: © RWD
Six stamens carrying cream-coloured pollen.


22nd June 2010, Cark, Cumbria. Photo: © RWD
Seed pods ten towards brown/purple, curve upwards and are narrow with just a single row of seeds in the pod unlike Watercress which is wider but flattened with two rows.


22nd June 2010, Cark, Cumbria. Photo: © RWD
Seed pods growing longer.


22nd June 2010, Cark, Cumbria. Photo: © RWD
Stems may be ridged or grooved, Leaves pinnate, well separated, and wrinkly. Underside shown here.


22nd June 2010, Cark, Cumbria. Photo: © RWD
Leaves stalkless and turn brownish purple in autumn unlike Watercress whose leaves remain green all year.

Easily mistaken for : Watercress but that stays green and does not turn purple in autumn, and also has shorter, wider and flattened seed pods containing a double row of seeds rather than the single row of Narrow-fruited Watercress.

Hybridises with : Watercress (Nasturtium officinale) to produce a sterile hybrid called Hybrid Watercress which usually has sorter and deformed seed pods.

Some similarities to : Fool's Watercress but that belongs to the Umbellifer Family, Apiaceae.

Not to be confused with : Wintercress [another Cabbage Family plant with similar name].

Habitat includes growing in or by slow-flowing fresh-water streams or in mud, often in limey soils.

ANY TEXT GOES HERE

Distribution
family8Cabbage family8Brassicaceae
BSBI maps
genus8Nasturtium
Nasturtium
(Water-Cresses)

NARROW-FRUITED WATERCRESS

ONE-ROWED WATERCRESS

Nasturtium microphyllum

formerly: Rorippa microphylla
Cabbage [Brassicaceae]

WildFlowerFinder Homepage