London - Fumes from the newly in bloom amorphophallus titanum - or the giant stinkhorn lily - have been traced to royal nuptial florists Belladonna Brothers of Barking.
Named after Victorian era royal bicycle Lily Langtry, grandmother of Elizabeth II, the corpse flower is actually too big for inclusion in Kate Middleton's bridal bouquet.
But it may form the centrepiece of a giant table decoration on the Buckingham Palace wedding breakfast spread - if a massive clean-up operation of its odor-emitting glands is successful.
The plant's huge phallus-like central spadix is responsible for the noxious carrion-like smells.
However judicious scrubbing with carbolic soap and industrial alcohol soon metamorphose the stench into a fragrance similar to the Queen Mother's favorite perfume, Eau de Suez.
Botanists reckon all part of the gigantic inflorescence can also be eaten Japanese-style as a petular tempura.
A wine made from 1925 Kew Gardens bloom will toast the happy couple this Friday.