Water spangles, Salvinia sp July 25, 2012 · by rathomas49 · in Vascular Plants. · Photo by Bob Thomas, Simla (Wm. Beebe Research Station), Trinidad, November 1994. These were growing on small research ponds at Simla. Salvinia is a highly invasive species that is wreaking havoc in the waterways of the southern U.S. Share this: Click to share on X (Opens in new window) X Click to share on Facebook (Opens in new window) Facebook Like Loading... Related