Blossoms open at sunrise and close at sunset.
Close related species - Turnera diffusa, Turnera aphrodisiaca (Damiana), highly valued medicinal plant.
stimulant, smoked or extract drunk in water or , more effective, alcohol. Contain essential oil, tannin and other active ingredients. Damiana is one of the more notorious herbal aphrodisiacs and has the reputation of being a superlative sexual tonic. It is a mood-elevating aromatic herb that helps calm anxiety and induce a relaxed state of mind, considered especially useful when anxiety and depression are discouraging sexual arousal. Damiana lends a delightful energy and flavor to wines and sundry other erotic potions.
See article about this plant: Turnera - Aphrodisiac Superherb