Physaria chambersii is a species of flowering plant in the family Brassicaceae known by the common name Chambers' twinpod. It is native to the southwestern United States, where it grows in desert woodland and plateau habitat. It is a perennial herb growing from a taproot and producing a clumpy rosette of stems up to 15 centimeters long, growing erect and falling over in fruit. The plant is covered in a silver-white coat of hairs. The leaves in the rosette are rounded to oval, up to 6 centimeters long by 2 wide, and smaller, spoon-shaped leaves are located along the stems. The inflorescence is a raceme of four-petalled golden yellow flowers. The fruit is an inflated pod which may be over a centimeter long. It is notched and divided into two chambers, each containing 4 seeds.
Sidalcea oregana is a species of flowering plant in the mallow family known by the common name Oregon checkerbloom.
Physaria obcordata is a rare species of flowering plant in the family Brassicaceae known by the common name Dudley Bluffs twinpod. It is similar in appearance to the more common Piceance twinpod, but can be distinguished by looking at the leaves through a hand lens. The Piceance twinpod, Physaria acutifolia has stellate hairs when viewed through a hand lens while Physaria ocordata has markings that look like a satellite dish, or a circle with a dot in the middle. It is endemic to Colorado, where it is found only in the Piceance Basin in Rio Blanco County. It is threatened by the loss and degradation of its habitat. It is a federally listed threatened species of the United States.
The genus Styrax has an estimated 120 species in eastern Asia, the New World, and the Mediterranean region. Styrax platanifolius is a species of flowering plant in the family Styracaceae known by the common name sycamoreleaf snowbell or "Texas Snowbell". It is native to northeastern Mexico in the states of Coahuila, Nuevo León, and Tamaulipas and the US state of Texas, especially on the Edwards Plateau. Styrax flowering season is estimated to be during the months of April-May. Its fruiting season has been observed to be during July-September. Styrax platanifolius thrive in more of a subhumid climate.
Physaria globosa is a rare flowering plant in the mustard family commonly known as globe bladderpod, Short's bladderpod, and Lesquereux's mustard. It is endemic to the United States, where it is limited to Indiana, Kentucky, and Tennessee. It is a rare species throughout its range and in 2014 the U.S. Fish and Wildlife Service issued a final rule protecting it under the Endangered Species Act.
Physaria didymocarpa is a species of flowering plant in the mustard family known by the common name common twinpod. It is native to western North America, including British Columbia and Alberta in Canada and the northwestern United States.
Physaria parviflora is a species of flowering plant in the family Brassicaceae known by the common names Piceance bladderpod and frosty bladderpod. It is endemic to Colorado in the United States, where it occurs in Garfield, Mesa, and Rio Blanco Counties.
Physaria bellii is a species of flowering plant in the family Brassicaceae known by the common names Bell's twinpod and Front Range twinpod. It is endemic to Colorado in the United States.
Physaria fremontii is a species of flowering plant in the family Brassicaceae known by the common name Fremont's bladderpod. It is endemic to Wyoming in the United States, where it occurs only in and around the Wind River Range in Fremont County.
Physaria tenella is a species of flowering plant in the family Brassicaceae known by the common names Moapa bladderpod and slender bladderpod. It is native to western North America from Utah to Sonora, where it grows mainly in desert habitat. This is an annual herb producing several hairy multibranched erect to spreading stems sometimes exceeding half a meter long. The basal leaves are up to 6.5 centimeters long and sometimes toothed, and there are smaller leaves higher on the stem. The inflorescence is a raceme of flowers at the tip of the stem. The mustardlike flower has four orange to bright yellow petals each up to a centimeter long. The fruit is a plump, hairy, rounded capsule containing flat orange seeds.
Leavenworthia crassa is a species of flowering plant in the mustard family, Brassicaceae, known commonly as the fleshy-fruit gladecress. It is endemic to Alabama in the United States, where it occurs in only two counties. It is "likely one of the most imperiled plant species in the Southeast," and the United States Fish and Wildlife Service issued a final rule listing it as an endangered species in 2014.
Physaria pallida is a rare species of flowering plant in the mustard family known by the common name white bladderpod. It is endemic to Texas in the United States, where it is known only from San Augustine County. It is federally listed as an endangered species.
Physaria congesta is a rare species of flowering plant in the mustard family known by the common name Dudley Bluffs bladderpod. It is endemic to western Colorado in the United States, where it is known only from seven occurrences in Rio Blanco County. It is federally listed as a threatened species.
Physaria kingii is a species of flowering plant in the family Brassicaceae known by the common name King bladderpod. It is native to western North America from Utah to Baja California, where it grows in dry and rocky habitat, such as deserts and adjacent mountain slopes. This is a perennial herb growing a small, hairy stem from a caudex. The leaves form a patch or rosette around the caudex, each up to 6 centimeters long and round, oval, diamond, or spoonlike in shape. The inflorescence is an erect or mostly upright raceme of bright yellow mustardlike flowers. The fruit is a hairy capsule under a centimeter long suspended on a short, often curvy pedicel.
Physaria parvula is a species of flowering plant in the family Brassicaceae known by the common name pygmy bladderpod. It is native to the Western United States, where it can be found in Colorado, Utah, and Wyoming.
Physaria pruinosa is a species of flowering plant in the family Brassicaceae known by the common names Pagosa Springs bladderpod and frosty bladderpod. It is native to Colorado and New Mexico in the United States.
Physaria thamnophila is a rare species of flowering plant in the mustard family known by the common name Zapata bladderpod. It is native to Texas in the United States, where it is known from Zapata and Starr Counties. The plant is threatened by the loss and degradation of its habitat. It is federally listed as an endangered species.
Physaria tumulosa, known by the common name Kodachrome bladderpod, is a rare species of flowering plant in the family Brassicaceae. It is endemic to Utah in the United States, where it is known only from Kane County. There is only one known population of this plant, made up of scattered occurrences totaling about 20,000 individuals, all within the Kodachrome Basin. The plant is threatened by the loss and degradation of its habitat. It is federally listed as an endangered species. It was previously treated as a subspecies of Physaria hitchcockii.
Physaria navajoensis, the Navajo twinpod or Navajo bladderpod, is a plant species native the US states of Arizona, Utah, and New Mexico. It is known from only one county in Arizona (Apache), one in Utah (Kane) and two counties in New Mexico. Much of the plant's range is on land of the Navajo Nation. The plant occurs in open, sunny locations at elevations of 2200–2400 m.
Penstemon cyanocaulis, the bluestem penstemon or bluestem beardtongue, is a perennial plant in the plantain family (Plantaginaceae) found in the Colorado Plateau and Canyonlands region of the southwestern United States.
