Wuornos originally claimed she had killed in self-defence, after being raped. Click here to see the map of the killings
Several years later, she admitted planning the murders with robbery as her motive.
At her 1992 trial, State Attorney John Tanner described her as "a homicidal predator".
"She was like a spider on the side of the road, waiting for her prey - men," he said.
Rejecting appeals
In April this year Wuornos refused to go along with another appeal.
"I would prefer to cut to the chase and get on with an execution," she wrote.
"Taxpayers' money has been squandered, and the families have suffered enough."
Wuornos became a celebrity, and books, a film and an opera were written about her case.
Last week, Governor Bush lifted a stay on her execution when a team of psychiatrists ruled that she was sane.
'Election ploy'
Wuornos was abandoned by her mother as an infant, and her father was a convicted child molester who committed suicide in jail.
She became pregnant at 14, but had to give up the child.
In April, she wrote to the authorities: "I have hate crawling through my system.
"I'm one who seriously hates human life and would kill again."
She is only the second woman to be executed in Florida after the re-introduction of the death penalty in 1976.
Opponents of the death penalty say her execution, and that of Rigoberto Sanchez-Velasco last week, are being used by Governor Bush to help his re-election prospects in next month's poll for the post of governor.
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