If you get an e-mail along these lines: Legends from a small country: The Micro Frog of Floral Doom:
If you see someone selling arum lillies you must call City Law Enforcement on (021) 596 1400/1424
It is the start of Arum Lily season. A tiny endangered Arum Lily Micro Frog breeds inside the water and dew held in the cup of these Lilies. We are desperate to curtail the gross destruction of Lilies. Please don't buy Lilies sold at traffic intersections.
... don't be alarmed. You can bin it where you put those other ones from a dying auntie who wants to leave you her ex-dictator husbands fortune.
As Arthur explains: Legends from a small country: The Micro Frog of Floral Doom:
The truly sad part about this plea is that the Arum Lily Micro Frog ... does ... not ... exist.
It is an urban legend, cobbled together from two distinct species of frog, the sprouting of flower sellers on the streets of Cape Town as spring approaches, and good old fashioned misinformation. Mix in the discovery of a new species of micro frog as the urban legend was spreading, and suddenly our inboxes were no longer safe from the amphibian invasion.
And you can read the full story on his blog.