There's no plant that exists completely without roots. Roots are essential for plants to absorb water and nutrients from the soil, anchor themselves, and store food.

However, there are a few examples that might make you think of a "plant without roots":

* Epiphytes: These plants grow on other plants, like trees, for support. They don't have roots that penetrate the ground but instead use specialized roots to cling to the host plant or absorb moisture and nutrients from the air. Examples include orchids, bromeliads, and ferns.

* Parasitic Plants: These plants lack chlorophyll and obtain their nutrients from a host plant, often via specialized root-like structures called haustoria. Examples include mistletoe and dodder.

While these plants might not have typical roots in the ground, they still have modified structures that fulfill similar functions.