Leaves and stem turn purplish in autumn. Siliquae 15-22 mm long, usually 1 mm broad., slender on up to 20 mm long pedicels, spreading; valves smooth glabrous; seeds uniseriate, c. 0.8 mm long, with c. 100 polygonal depressions on each face.
Nasturtium microphyllum, the onerow yellowcress,[2] is an aquatic plant species widespread across Europe and Asia, and naturalized in the United States, Canada, Mexico, Central America, Australia, New Zealand and other places. It occurs in wet locations generally at elevations less than 1500 m. It has been reported from every Canadian province except Nova Scotia and Saskatchewan. In the US, it is fairly common in New England, New York, and Michigan, with scattered populations in the southern and western parts of the country.[3][4][5]
Nasturtium microphyllum, the onerow yellowcress, is an aquatic plant species widespread across Europe and Asia, and naturalized in the United States, Canada, Mexico, Central America, Australia, New Zealand and other places. It occurs in wet locations generally at elevations less than 1500 m. It has been reported from every Canadian province except Nova Scotia and Saskatchewan. In the US, it is fairly common in New England, New York, and Michigan, with scattered populations in the southern and western parts of the country.
