This section is from the book "An Illustrated Flora Of The Northern United States, Canada And The British Possessions Vol2", by Nathaniel Lord Britton, Addison Brown. Also available from Amazon: An Illustrated Flora of the Northern United States, Canada and the British Possessions. 3 Volume Set..
An aquatic herb, the immersed leaves finely dissected, with large white racemose flowers. Style slender. Silicles ovoid, 1-celled. Seeds small, few, in 2 rows in each cell. Cotyledons accumbent. [In honor of Lewis Caleb Beck, 1798-1853, American chemist and botanist.]
A monotypic genus of eastern North America.
Cochlearia aquatica Eaton, Man. Ed. 5, 181. 1829. Nasturtium natans var americanum A. Gray, Ann. Lyc. N.
Y. 3: 223. 1836. Nasturtium lacustre A, Gray, Gen. 1ll. 1: 132. 1848. Roripa americana Britton, Mem. Torr. Club 5: 169. 1894. Neobeckia aquatica Greene, Pittonia 3: 95. 1896. Radicula aquatica Robinson, Rhodora 10: 32. 1908.
Branching, 1°-2° long. Immersed leaves 2'-6' long, pinnately dissected into numerous filiform divisions; emersed leaves lanceolate to oblong, obtuse or acute, 1' - 3' long, entire, serrate or lobed, readily detached from the stem; pedicels 3"-4" long, slender, rpreading or ascending; petals longer than the sepals; style about 1" long; pods 2" long.