Why is this plant so desirable to you when the local kind probably has the same medicinal properties? It's a common weed in Tahiti, but the medicinal herb guy who came to see me there said that it was a great herb for weight loss.
The US or European one (vervain officialis) probably has the same medicinal properties from the verbenalin it contains,an infusion of 15-20 G of the whole fresh plant per liter of water, drink 3-4 cups a day, is great for the nervous system ailments(neurovegetative):[antispasmodic, analgesic, digestive, antiinflammatory, aphrodisiac, mild diuretic,soaked compress on sinusitis is great] Sorry I am just curious, if it's worth having my dad hunt for them in Tahiti and send some seeds to me. Chris