Franciscea uniflora (Brunfelsia uniflora) - Manaca, Vegetable Mercury
"Manaca is a valuable remedy for gonorrhea and for gonorrheal rheumatism.
Dr. Hopkins gives manaca in muscular rheumatism in four-drop doses every two or three hours. He often combines it with cimicifuga. In either case, the results are satisfactory."
(Finley Ellingwood: The American Materia Medica, Therapeutics and Pharmacognosy, 1915)