Arrhenatherum elatius is a species of flowering plant in the grass family Poaceae, commonly known as bulbous oat grass, false oat-grass, tall oat-grass, tall meadow oat, onion couch and tuber oat-grass. It is native to Europe, western Asia, and northern Africa. This bunchgrass is often used as an ornamental grass and is sometimes marketed as "cat grass".
Pleuropogon is a genus of Arctic and North American plants in the grass family known generally as semaphore grass.
Bothriochloa barbinodis is a species of grass known by the common name cane bluestem. It is native to the Americas, including most of South and Central America, Mexico, and the southernmost continental United States from California to Florida.
Pleuropogon hooverianus is a rare species of grass known by the common name North Coast semaphoregrass. It is endemic to northern California, where it is known from Mendocino, Marin, and Sonoma Counties. It grows in moist marshy areas and shady redwood forests. It is an erect perennial grass growing to a maximum height between one and 1.6 meters. The inflorescence bears widely spaced narrowly cylindrical spikelets which hang sideways off the stem, resembling semaphore signals. Each spikelet may be up to 4.5 centimeters long and may contain up to 16 flowers.
Pleuropogon refractus is a species of grass known by the common name nodding semaphoregrass. It is native to the west coast of North America from British Columbia to northern California, where it grows in moist meadows, marshy areas, and shady forests.
Mirabilis macfarlanei is a rare species of flowering plant in the four o'clock family known by the common name MacFarlane's four o'clock. It is native to Idaho and Oregon in the United States, where it is only known from three river canyons. It faces a number of threats and is federally listed as a threatened species of the United States.
Physaria filiformis is a rare species of flowering plant in the family Brassicaceae known by the common names Missouri bladderpod and limestone glade bladderpod. It is native to Missouri and Arkansas in the United States. It was federally listed as an endangered species in 1987 and it was downlisted to threatened status in 2003. P. filiformis remains listed as an endangered species at the state level in Missouri.
Sidalcea nelsoniana is a rare species of flowering plant in the mallow family known by the common names Nelson's checkerbloom and Nelson's checkermallow. It is native to the Willamette Valley and Coast Range of Oregon and the southwestern corner of Washington in the United States. It is threatened by the destruction and degradation of its habitat, and it is a federally listed threatened species of the United States.
Calochortus umpquaensis is a species of flowering plant in the lily family known by the common name Umpqua mariposa lily. It is endemic to Oregon in the United States, where it is mainly limited to the region of the Klamath Mountains on the Little River in Douglas County, in particular the Watson and Ace Williams Mountains. The flower has also been found at a single location in each of Josephine and Jackson Counties.
Andropogon ternarius is a species of grass known by the common names split bluestem, splitbeard bluestem, silver bluestem, and paintbrush bluestem. It is native to the southeastern, east-central, and south-central parts of the United States, where it occurs from New Jersey south to Florida and west to Kansas, Oklahoma, and Texas.
Schizachyrium tenerum is a species of grass known by the common name slender little bluestem, or slender bluestem. It is native to the Americas, where it occurs in North, Central, and South America. In North America it can be found in the southeastern United States and much of Mexico.
Calochortus coxii is a rare species of flowering plant in the lily family known by the common names Cox's mariposa lily and crinite mariposa lily. It is endemic to Oregon in the United States, where it is known only from Douglas County.
Delphinium viridescens is a species of flowering plant in the buttercup family known by the common name Wenatchee larkspur. It is endemic to central Washington state in the United States, where it occurs in the Wenatchee Mountains in Chelan and Kittitas Counties.
Thelypodium eucosmum is a species of flowering plant in the mustard family known by the common names arrow-leaf thelypody and world thelypody. It is endemic to Oregon in the United States, where it is known from Grant and Wheeler Counties. There are also historical records of the plant from Baker County.
Astragalus tyghensis is a species of flowering plant in the legume family known by the common name Tygh Valley milkvetch. It is endemic to Oregon in the United States, where it is known only from the Tygh Valley of Wasco County.
Bothriochloa pertusa is a species of grass. It is widely used as a fodder and a graze for livestock.
Dichanthium annulatum is a species of grass in the family Poaceae. It is commonly used as a forage for livestock.
Digitaria didactyla is a species of grass known by the common names blue couch, Queensland blue couch, blue serangoon grass, green serangoon grass, blue stargrass, and petit gazon. It is native to Mauritius, Réunion, parts of mainland Africa, and Madagascar. It has been introduced widely outside its native range, mainly for use as a pasture and turf grass. It has naturalized in some regions.
Leersia hexandra is a species of grass known by the common names southern cutgrass, clubhead cutgrass, and swamp rice grass. It has a pantropical distribution. It is also an introduced species in many regions, sometimes becoming invasive, and it is an agricultural weed of various crops, especially rice. It is also cultivated as a forage for livestock.
Hyparrhenia rufa is a species of grass known by the common names jaraguá, jaraguá grass, and giant thatching grass. It is native to Africa and it is widespread in the world as a cultivated forage and fodder for livestock and a naturalized and sometimes invasive species.
