Nasturtium floridanum, common names Florida yellowcress and Florida watercress, is an aquatic plant species endemic to Florida, though widely distributed within that state. It is found in wet places at elevations less than 50 m.Flora of North America v 7 p 492, Nasturtium floridanum
Nasturtium floridanum can be distinguished from the more common N. officinale by its much smaller seeds, less than 2 mm across. Al-Shehbaz, Ihsan Ali & Price, Robert A. 1998. Novon 8(2): 125, Nasturtium floridanumAl-Shehbaz, Ihsan Ali & Price, Robert A. 1988 Journal of the Arnold Arboretum 69(1): 68, Rorippa floridanaChapman, Alvan (Alvin) Wentworth. 1887. Flora of the Southern United States (ed. 2) 605, Cardamine curvisiliqua
References
photo of herbarium specimen at Missouri Botanical Garden, serving as isolectotpe of Cardamine curvisiliqua and Nasturtium floridanum