Almost all the poisonous plants are beautiful and Deadly Nightshade (Atropa belladonna) is no exception. Like henbane it contains the deadly alkaloids, scopolamine, hyoscyamine, and atropine. And of course it was the most well known ingredient in the witches’ flying ointment. So toxic, only two berries will kill a child, ten an adult, it is one of the most dangerous plants in the Eastern Hemisphere. Interestingly, it is possible to develop a tolerance to belladonna, useful for would be assassins who wished to demonstrate the safety of a poisoned drink. The fact that the berries reportedly ave a sweet, fruity taste, made them useful to poison wine, as there was no need to mask the taste as with the bitter alkaloids of henbane and aconite. King Duncan of Scotland, when he needed to get rid of some troublesome Danes, made just such an efficacious use of someone with an acquired immunity to belladonna as related in George Buchanna’s History of Scotland, vol 6:
Whereupon a great deal of Bread and Wine was sent them, both Wine pressed out of the Grape, and also strong Drink made of Barley-Malt, mixed with the Juice of a poysonous Herb, abundance of which grows in Scotland, called Sleepy Night-shade. The Stalk of it is above two Foot long, and in its upper part spreads into Branches; the Leaves are broadish, acuminated at the Extremities, and faintly green. The Berries are great, and of a black Colour when they are ripe, which proceed out of the Stalk under the bottom of the Leaves; their Taste is sweetish, and almost insipid; it hath a very small Seed, as little as the Grains of a FigWhereupon a great deal of Bread and Wine was sent them, both Wine pressed out of the Grape, and also strong Drink made of Barley-Malt, mixed with the Juice of a poysonous Herb, abundance of which grows in Scotland, called Sleepy Night-shade. The Stalk of it is above two Foot long, and in its upper part spreads into Branches; the Leaves are broadish, acuminated at the Extremities, and faintly . The Vertue of the Fruit, Root, and especially of the Seed, is Soporiferous, and will make Men mad if they be taken in too great Quantities. With this Herb all the Provision was infected, and they that carryed it, to prevent all Suspicion of Fraud, tasted of it before, and invited the Danes to drink huge Draughts of it.
One could never be too careful. Anyone could subject themselves to the minute doses of belladonna over time and demonstrate the supposed safety of a beverage. In The Serpentine Key, Ivan Vladislav exhibits a wise paranoia in the company of Emperor Basil II and refuses to drink the wine, even when Basil himself drinks from the proffered cup:
“Wine. Bring him some wine,” Basil told a eunuch who waited silently by a curtain, obscuring an entryway into a shadowy side room. On silent, slippered feet, the eunuch disappeared like a ghost and returned a few minutes later with a small goblet of rich ruby liquid. He offered it to Ivan. Ivan gripped the carved wooden arms of the chair. He shook his head.
An amused smile curved over Basil’s lips. “I assure you, I am not attempting to poison you, Cometopuli.” Still Ivan shook his head. Basil beckoned to the eunuch. “Think you that I have the need to use poison on the son and nephew of my enemies when I have so many armed men at my disposal? But make a wrong move and I could slay you myself. I do not use your devious methods.”
“My devious methods,” Ivan spat. “You sent the wrong bride and you do not call yourself devious?”
Basil laughed. “ If it pleases you, I will taste it myself.” He gestured for the cup to be brought to him and took a long sip of the wine.
Belladonna is a native to Europe and North Africa, likely naturalized in North America through the fecal material of pigs brought over to this continent. Pigs are among the livestock who also appear to not suffer any of the adverse effects of the plant. To humans it is a deadly toxin and should never be grown in gardens where children could access it. Children, especially should be cautioned not to touch unknown plants, as even handling the roots with broken skin can cause toxicity. Because the berries are attractive and sweet, perhaps more children than any other fall victim to this deadly plant.
Resources:
History of Scotland vol. 6 by George Buchannan.