Eureka Valley is located in Inyo County, in eastern California in the southwestern United States. It is approximately 28 miles (45 km) long and up to 10 miles (16 km) wide, with elevations varying from 2,870 feet (870 m) up to 8,456 feet (2,577 m). The southern section of the valley is now part of the Death Valley National Park - Death Valley itself lies just to the southeast. To the north is Deep Springs Valley, Fish Lake Valley, and the White Mountain Range. To the east the Last Chance Range rises over 5,500 feet (1,700 m) above the valley floor. To the west are the Saline Mountains, and to the southwest lies Saline Valley.
Dissanthelium is a genus of plants in the grass family. It is native to the Americas, especially in the Andes of South America.
Ammophila arenaria is a species of grass in the family Poaceae. It is known by the common names marram grass and European beachgrass. It is one of two species of the genus Ammophila. It is native to the coastlines of Europe and North Africa where it grows in the sands of beach dunes. It is a perennial grass forming stiff, hardy clumps of erect stems up to 1.2 metres (3.9 ft) in height. It grows from a network of thick rhizomes which give it a sturdy anchor in its sand substrate and allow it to spread upward as sand accumulates. These rhizomes can grow laterally by 2 metres in six months. One clump can produce 100 new shoots annually.
The Lanphere Dunes National Natural Landmark a unit of the Humboldt Bay National Wildlife Refuge Complex, is located in Humboldt County, California. The dune complex consists of the wave slope, fore dune, herbaceous and woody swales, coniferous and riparian forest, freshwater swamp, freshwater marsh, brackish marsh, salt marsh, and intertidal mudflats. The site exemplifies dunes succession.
Neostapfia is a genus of endemic Californian bunchgrasses, in the subfamily Chloridoideae of the grass family, Poaceae. The only known species is Neostapfia colusana, with the common name Colusa grass.
Danthonia californica is a species of grass known by the common name California oatgrass. This plant is native to two separate regions of the Americas, western North America from California to Saskatchewan, and Chile.
Erysimum menziesii is a species of Erysimum known by the common name Menzies' wallflower.
Fritillaria striata, the striped adobe lily, is an uncommon species of fritillary.
Eriocoma latiglumis is a species of grass known by the common names wide-glumed needlegrass and Sierra needlegrass.
Carex pansa is a species of sedge known by the common name sand dune sedge. It is native to coast of western North America from British Columbia to California, where it grows in dunes and other sandy habitat. This grasslike sedge produces sharply triangular stems up to about 40 centimeters tall from a network of thin, long, coarse rhizomes. The inflorescence is a cluster of several spikes of dark brownish flowers. The plant sometimes produces only male or female flowers in its inflorescences, but not both. This sedge is sometimes used as a grass substitute in local landscaping schemes.
Chorizanthe valida is a rare species of flowering plant in the buckwheat family known by the common name Sonoma spineflower. It is endemic to West Marin, Marin County, California, where it is known from only one remaining natural population at Point Reyes National Seashore. It was thought to be extinct until 1980 when the Point Reyes population was discovered.
Lessingia germanorum is a rare species of flowering plant in the family Asteraceae known by the common name San Francisco lessingia. It is endemic to California, where it is known from four populations in the Presidio of San Francisco and one occurrence on San Bruno Mountain south of San Francisco. It is a state and federally listed endangered species. The already rare plant is endangered by many processes, including invasive species, development, sand mining, off-road vehicles and bulldozers, habitat fragmentation, trampling, and pollution, as well as stochastic events.
Oenothera californica, known by the common name California evening primrose, is a species of flowering plant in the evening primrose family.
Phacelia argentea is a rare species of phacelia known by the common names sand dune phacelia and silvery phacelia. It is native to the coastline of southwestern Oregon and far northwestern California, where it was counted at a total of 33 sites in 1995. It is the only phacelia species endemic to coastal sand dune habitat, an ecosystem which is altered and declining in the area.
Poa douglasii is a species of grass known by the common names Douglas' bluegrass and sand dune bluegrass. It is endemic to the coastline of California, where it grows in shifting sand dunes. It can be found mostly along the Central Coast and Channel Islands, and occasionally on the North Coast north of Mendocino. It is a perennial grass growing small, dense clumps up to about 30 centimeters in maximum height. It grows from a network of long rhizomes and stolons that anchor the grass to its loose sandy substrate; this network may be up to one meter long. The inflorescence is a dense, oval-shaped series of overlapping spikelets. The grass is dioecious, with male and female individuals producing different types of flowers in their inflorescences. This species, like many sand-dune endemic plants, is threatened by invasive species.
Poa macrantha is a species of grass known by the common names seashore bluegrass and large-flowered sand dune bluegrass. It is native to the west coast of North America from Alaska to northern California, where it grows in sand dunes and other beach habitat.
Sidalcea stipularis is a rare species of flowering plant in the mallow family, known by the common name Scadden Flat checkerbloom.
Jason Richard Swallen was an American botanist specializing in grasses.
Hilaria rigida is a species of clumping perennial grass that is widespread in California deserts. It is commonly known as big galleta. It is a monocot in the Hilaria genus of the grass family (Poaceae).
Thorneochloa is a genus of flowering plants belonging to the family Poaceae. It contains a single species, Thorneochloa diegoensis, commonly known as San Diego needlegrass. It is a perennial grass native to California and to Todos Santos in the southern Baja California Peninsula.
