If you go looking for mermaid-weed, you're likely to get wet. Then if you go looking for lore about mermaid-weed you're likely to get nothing. But it is one of those hugely important plants that does everything it can to keep our water clean and our dirt where it belongs. Even in our aquariums. In the wild you mostly will spot it sticking up from shallow water with stems approaching a foot tall. It also may be entirely under water. These flowers are only about a quarter inch, if that. Until this effort to get close, I didn't realize there were anything resembling petals. Marsh mermaid-weed grows in AL, AR, CT, DE, FL, GA, IA, IL, IN, KY, LA,MA, MD, ME, MI, MN, MO, MS, NC, NE, NH, NY, OH, OK, PA, RI, SC, TN, TX, VA, VT, WA, WV, NB, NS, ON, and QC. Lucas co OH, 7/24/22. Water-milfoil family, Haloragaceae.