Thamnosma montana, the turpentine broom, or Mojave desert-rue, is a shrub in the citrus family Rutaceae. It is native to the deserts of the southwestern United States and northern Mexico. Except immediately after heavy rains, its straight stems usually lack leaves, giving it a broom-like appearance. The Latin specific epithet montana refers to mountains or coming from mountains.
It is a shrub with many straight, broom-like, yellow-green, 30 to 60 centimetres long. Except after heavy rains, it is ...