What's This About Mistletoe?

Yesterday at work I received a New Year's kiss (the Frenchie cheek kind. Please.) from one of my colleagues. Then he asked me, what's the word for the plant that you kiss under? Do you have this in America?

"Mistletoe" I replied.

"With the berries?"

"White?"

"Yes. And you kiss under it as well?"

"Yes!"

"And it's cut by druids."

Eh?
Here's where our cultural parallels separated. "Druids?"

"Do you know what a druid is?"

"Yes. The guys who built Stonehenge." Although in my mind I was picturing sand people from Star Wars, with their beady little eyes, marching through the desert with armloads of mistletoe.

"Right. They cut the mistletoe with golden knives."

"What? How does a gold knife cut anything?"

He shrugged and walked away. Yet another charming tradition with a bizarre French twist. Where do they get this stuff?