The word "lithophyte" comes from the Greek words "lithos" (stone) and "phyton" (plant). These plants have adapted to survive in harsh environments with limited soil and water, often clinging to the rocky surface with specialized roots or structures.

Here are some examples of lithophytes:

* Lichens: These symbiotic organisms are often the first colonizers of bare rock, breaking down the rock and creating a thin layer of soil.

* Mosses: These small, non-vascular plants can thrive in moist environments on rocks, absorbing water directly through their leaves.

* Ferns: Some ferns, like the rock fern (Polypodium virginianum), are able to grow on rocks, especially in shady, moist areas.

* Cacti: Certain species of cactus, like the prickly pear cactus, can grow on rocky slopes, drawing moisture from the air.

* Alpine plants: Many plants found in high-altitude environments have adaptations to survive on rocky terrain, including deep roots and thick, waxy leaves to conserve water.

It's important to note that the term "lithophyte" is not a strictly defined taxonomic group, but rather a descriptor of plants that share a common adaptation to life on rock.