I thought the name Rattlesnake was very interesting for beans.

The rattlesnake bean is a heirloom cultivar of pole bean.
The pods are 6 to 8-inches long with purple markings,
and the seeds are light brown with brown markings,
still visible after cooking. They are named for
the snake-like manner in which their pods
coil around the vine. Wikipedia.

https://en.wikipedia.org/wiki/Rattlesnake_bean