Catclaw acacia (Senegalia greggii or Acacia greggii) is regularly infected by Ravenelia pringlei: an autoecious rust. It is noticeable where it causes a distorted growth pattern commonly called a "witches broom" covered in brown, dusty, spores. Some people have mistaken this rust for mistletoe ...

- Schalau, Jeff: (2015) Rust diseases^©