TheSierra Nevada is amountain range running 400 miles (640 km) north-to-south along easternCalifornia, and occasionally into westernNevada. This list ofnative plants is organized by elevational distribution ranges and theirplant communities. Some plants with a broader altitudinal range are found listed in their predominant habitat elevation. All the plant species listed arenative to the Sierra's foothills, valleys, and mountains. In addition some are alsoendemic to here and elsewhere within California, labeled(ca-endemic). Some are further endemic to and only found in the Sierra Nevada, labeled(sn-endemic).
The Sierra Nevada's length, height, geological age, and wide variety ofecosystems andhabitats, make it home to one of the most diverse collections of distinct plant species in theUnited States.
Biogeography looks at the spatial and temporal distributions of species. A descending hierarchy is used, with arealms at the top, thenbiomes, followed by smallerterrestrial ecoregions. The Sierra Nevada are a small part of the North American continentalNearctic realm. The Sierra contain portions of two Nearctic biomes: