The water hyssop. There is some debate as to the native status of this little herb but, despite having a Sanskrit name (Brahmi), it has been in North America as long as anyone can remember so it's probably pan-tropical. This little plant has a phenomenal variety of medicinal uses and has been utilized from ancient times right up to the present. I can't begin to list them all but uses including a natural way to improve memory, antioxidant properties, tranquillizer, muscle relaxant, anti-anxiety and a natural anti-depressant.
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