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.
Festuca subuliflora is a species of grass known by the common name crinkleawn fescue. It is native to western North America from British Columbia to California where it is most abundant in the moist forests of the coastal mountains.
Festuca viridula is a species of grass known by several common names, including green fescue, greenleaf fescue, and mountain bunchgrass. It is native to western North America from British Columbia to Colorado, where it is most abundant in high-elevation forests and meadows.
Achnatherum lettermanii is a species of grass known by the common name Letterman's needlegrass. The updated and accepted name is Stipa lettermanii. It is native to the western United States from California to Montana to New Mexico, where it is a resident of several types of habitat.
Achnatherum occidentale is a species of grass known by the common name western needlegrass. It is native to western North America from British Columbia to California to Colorado, where it grows in many types of habitat. This is a tufting perennial bunchgrass forming tight clumps of erect stems up to about 120 centimetres (47 in) in maximum height, but sometimes much shorter. The hairlike leaves are less than a millimeter wide and may have rolled edges. The inflorescence is up to 30 centimetres (12 in) long, with each hairy spikelet bearing an awn up to 4 or 5 centimeters long. The awn is kinked twice.
Briza minor is a species of grass known by the common names lesser quaking-grass or little quakinggrass. It is native to the Mediterranean Basin, and it is known elsewhere, including much of North America, as an introduced species. It is an annual grass producing narrow clumps of erect stems up to 50 centimeters tall. The inflorescence bears several small cone-shaped spikelets, each hanging on a pedicel.
Deschampsia danthonioides is a species of grass known by the common name annual hairgrass. It is native to western North America from the Yukon Territory and British Columbia, through California and the Western United States, to Baja California, and also to southern South America in Chile and Argentina.
Muhlenbergia filiformis, known by the common name pullup muhly, is a species of grass. It is native to western North America from western Canada through the Western United States to northern Mexico.
Oenothera wolfii is a rare species of flowering plant in the evening primrose family known by the common name Wolf's evening primrose. It is native to the coastline of southern Oregon and northern California, where it grows in coastal prairie, dunes, and coastal forest and woodland habitat. As of 1997 it was known from only about 16 occurrences. The biggest threat to the plant is its easy hybridization with its relative and probable descendant, Oenothera glazioviana. As this rare wild plant crosses with the introduced garden escapee, introgression occurs, causing what is known as genetic pollution; fewer pure individuals of O. wolfii will be seen as they are outnumbered by hybrids.
Cylindropuntia wolfii is a species of cactus known by the common name Wolf's cholla.
Poa bolanderi is a species of grass known by the common name Bolander's bluegrass. It is native to western North America from British Columbia to Utah to California, where it is a resident of mountain habitat, particularly pine and fir forests. It is an annual grass growing in clumps up to 60 centimeters tall. The inflorescence occupies the top 10 to 15 centimeters of the stem. It is narrow in flower, with branches appressed, growing parallel to the stem. As the fruit develops the branches spread out, becoming perpendicular to the stem, nodding, or drooping. The branches have few, sparse spikelets.
Poa cusickii is a species of grass known by the common name Cusick's bluegrass. It is native to western North America from Yukon to Colorado to eastern California, where it grows in many types of habitat, including high mountain meadows and slopes, sagebrush scrub, and forests.
Puccinellia lemmonii is a species of grass known by the common name Lemmon's alkaligrass. It is native to western North America, particularly the northwestern United States, where it grows in moist, saline soils.
Saccharum ravennae, with the common names ravennagrass and elephant grass, and known locally as ekra or ikora (ইকঁৰা) in Assamese, is a species of grass in the sugarcane genus Saccharum. It is native to southern Europe, western Asia and South Asia and is known in North America as an introduced species, where it is sometimes an invasive and troublesome noxious weed.
Trisetum flavescens, the yellow oatgrass or golden oat grass, is a species of grass in the family Poaceae. It is native to Europe, Asia, and North Africa.
Spartina densiflora is a species of grass known by the common name denseflower cordgrass. It has been reclassified as Sporobolus montevidensis after a taxonomic revision in 2014, but Spartina densiflora is still in common usage. It is native to the coastline of southern South America, where it is a resident of salt marshes. It is also known on the west coast of the North America and parts of the Mediterranean coast as an introduced species and in some areas a noxious weed. In California it is a troublesome invasive species of marshes in San Francisco Bay and in Humboldt Bay, where it was introduced during the 19th century from Chile in ballast.
Sporobolus contractus is a species of grass known by the common name spike dropseed. It is native to western North America, including the southwestern United States and northern Mexico. It grows in desert and plateau habitat, in woodlands, scrub, and dry, sandy, open areas.
Trisetum canescens is a species of grass known by the common names tall trisetum and tall false oat.
Trisetum spicatum is a species of grass known by the common name spike trisetum and spike false oat. It is native to North America, Eurasia, and South America. In North America it occurs throughout northern regions, including northern sections of the United States and most all of Canada, its range continuing to Greenland. It is widespread throughout the Canadian Arctic Islands. The grass occurs in a variety of Arctic and alpine habitat types, as well as many types of mountainous habitat in regions farther south. It is a perennial grass forming clumps of erect stems ranging in height from just a few centimeters to over one meter. The narrow leaves are mostly located around the bases of the densely clumped stems. The inflorescence is a narrow spike a few centimeters long or up to 30 to 50 centimeters in maximum length. The spikes are green to purple or brownish and shiny.
Leucopoa kingii is a species of grass known by the common names spike fescue and King's fescue. It is native to the western United States from Oregon and California east to Nebraska and Kansas.
