Sterculia villosa, the hairy sterculia, or elephant rope tree, known vernacularly as Sardol, Udal, or Udar in Northeast India, is a medium-sized, monoecious tree.

The elephant rope tree's panicles are about 15–30 cm long, rusty in color and pendulous.

Its flowers are unisexual and have pedicels about 4–8 mm long and thread-like bracteoles; the flowers are easily detached and tend to be shed at an early stage.

It is distributed throughout India and Bangladesh, although it is cultivated elsewhere due to its fast-spreading nature.

In Northeast India and Bangladesh, the plant's pulp is generally used for making tea boxes and light-weight packing cases, apart from use as fire-wood in certain rural areas.