A plant that grows on a sandy seashore, on sand dunes, or in deserts; extremophile: Such psammophytes are adapted to inhospitable environments including unstable soils, strong winds, and intense sunlight.

Some examples of psammophyte species are Agriophyllum squarrosum (sand rice), Haloxylon ammodendron (saxaul), and Corynephorus canescens (grey hair-grass or gray clubawn grass).

Plants that grow best in or tolerate sand, particularly fine to medium sand.