Saltmarsh fleabane is native from the US southward. It is indeed 'odorata', and in the Caribbean is the source of a popular medicinal tea. Wiki says it is antispasmodic, so it may be good for cramps. Think I'll try some! It is diuretic, and Wiki also says it's a vasodilator, and shouldn't be used if you get migraines or are pregnant. I'm safe? As an eyewash it reduces redness and pain from hayfever. Aha! Only $6.45 from Etsy. Or you can just go gather some in AL, AR, AZ, CA, CT, DE, FL, GA, IL, IN, KS, LA, MA, MD, ME, MI, MS, NC, NH, NJ, NM, NV, NY, OK, PA, RI, SC, TX, UT, VA, and ON. Everglades National Park, Miami-Dade Co FL, 1/27/13. Aster family, Asteraceae.