Doors, Huts, and the Occasional Tree

I've been laying off listening to much NPR news, but I happened to hear Gwen Thomkins reporting on the census in Sudan on Wednesday's ATC (the comments at the link are worth a look). If you can stand it, the first minute of the report is worth a listen just to hear how awkward and silly Thomkins can be. In the opening of the story Thomkins makes this priceless statement:

"This is what's happened so far: last April two separate commissions representing North Sudan and the semi-autonomous South dispatched thousands of enumerators abroad in the land. The enumerators knocked on hundreds of thousands of doors, huts, and the occasional tree and interviewed millions of people."

Occasional tree! Jeez, does NPR have anyone editing this rubbish? I'm sorry, but if a reporter handed me that, I'd just cut it to "knocked on hundreds of thousands of doors and interviewed millions of people." I found myself wondering which "occasional tree" was Thomkins thinking of?

Maybe it was this one she recalled from watching old movies?

Or maybe this one from a trip to Disneyland?

Or maybe she's a bit more contemporary and was thinking of George of the Jungle?