London - The repeat flowering cultivar is a genetically engineered hybrid from several plant species including Toxicodendron radicans (poison ivy), Atropa belladonna (deadly lampshade) and an oriental Phallaceae (stinkhorn).
It will be presented to Michell Obama when she tours this year's Chelsea Flower Show accompanied by the Queen and Prince Philip.
The trip will form part of the 24-27 May state visit and the First Couple are virtually guaranteed getting dragged through Chelsea's sprawling acres to hobknob with HM's fragrant hollyhocks.
It will also be the first time the Brits have named a thorny showstopper after a US president's wife.
In 1991 a semi-deciduous wahoo - or Burning Bush - was named after the 41st President of the United States to commemorate the blazing Kuwaiti oil wells following the first Gulf War.
Next, Bill Clinton has had various boring woodland lilies - or Clintonias - named after him, although erstwhile intern Monika Lewinsky had a carnivorous Venus Fly Trap named in her honor following the 1998 presidential impeachment.
President George Bush Jr's claim to Chelsea fame is less robust - although an exhibit by the National Poisons Unit in 2004 saw a new variety of the lethal Destroying Angel fungus - Amanita Bisporigera - dubbed The Dubya.
This year's Chelsea show has seen organisers turn down a number of new exhibit name suggestions including a velvety brown pansy called Barack O.
"The word has very different connotations in America," the Show's Colonel Mustard said today.
"The last thing we want is to slur the President's good name with an iffy moniker."