Somehow, Vice President Joe Biden doesn't know a formerly prominent figure that worked in the Obama administration.

The vice president appeared on AM 970 WFLA in Tampa, Florida Tuesday afternoon and was asked by host Jack Harris about the Occupy Wall Street movement in contrast to the tea party. Biden suddenly thought that Harris was referring to Van Jones's "Rebuild The Dream" group instead.

"I really don't know about the Van Jones group, except what I read in the press," Biden said. "I don't disrespect the tea party. I think the tea party and the Van Jones folks are different halves of the same concern."

Biden continued: "You have on one end Van Jones's guys, whoever he is, talking about Wall Street."

Suddenly, both Harris and his co-host Tedd Webb laughed and reminded Biden that Jones was the "Green czar" in the administration.

"Oh, is that... alright," Biden replied.

President Barack Obama appointed Jones to Special Adviser for Green Jobs, Enterprise and Innovation at the White House Council of Environmental Quality in March 2009. He resigned six months later amid controversy, after the media learned that he had signed a petition calling for an investigation into a possible government conspiracy to allow the 9/11 attacks to happen.

Listen: Interview from AM 970 WFLA, which appeared on October 4, 2011.