The Santa Cruz cypress is a species of North American tree within the Cypress family. The species is endemic to the Santa Cruz Mountains within the Santa Cruz and San Mateo counties of west-central California. The U.S. Fish and Wildlife Service listed the species on the Endangered Species Act in 1987 due to increasing threats from habitat loss and disruption of natural forest fire regimes. In 2016, the conservation status of the Santa Cruz cypress changed to Threatened. The cited reasoning was a decrease in threats against their habitat.
Amaranthus brownii was an annual herb in the family Amaranthaceae. The plant was found only on the small island of Nihoa in the Northwestern Hawaiian Islands, growing on rocky outcrops at altitudes of 120–215 m (394–705 ft). It was one of nine species of Amaranthus in the Hawaiian Islands, as well as the only endemic Hawaiian species of the genus. It is now considered extinct.
Platanthera yadonii, also known as Yadon's piperia or Yadon's rein orchid, is an endangered orchid endemic to a narrow range of coastal habitat in northern Monterey County, California. In 1998 this plant was designated as an endangered species by the United States government, the major threat to its survival being continuing land development from an expanding human population and associated habitat loss. One of the habitats of Yadon's piperia, the Del Monte Forest near Monterey, California, is the subject of a federal lawsuit, based upon endangerment of this organism along with several other endangered species.
The Kanab ambersnail, scientific name Oxyloma haydeni kanabense or Oxyloma kanabense, is a critically endangered subspecies or species of small, air-breathing land snail, a terrestrial pulmonate gastropod mollusc in the family Succineidae, the amber snails. The common name of the amber snails is based on the shell, which is translucent and when empty usually resembles the color of amber.
Alasmidonta atropurpurea, common name Cumberland elktoe, is a species of freshwater mussel, an aquatic bivalve mollusk in the family Unionidae, the river mussels.
Schwalbea americana, commonly known as American chaffseed, is the sole species currently classified in the genus Schwalbea. It is an erect, hemiparasitic, perennial herb in the family Orobanchaceae. It is native to the southeastern United States where it is found in wet acidic grasslands. This species has declined tremendously from its historical range due to fire suppression, and it is currently listed as "Endangered" by the U.S. Fish and Wildlife Service.
Bidens amplectens, the Waiʻanae kokoʻolau, is a species of flowering plant in the family Asteraceae. It belongs to the genus Bidens, collectively called kokoʻolau or koʻokoʻolau in the Hawaiian language. It is found in coastal and dry lowland habitats in the Waiʻanae Range on Oʻahu. It is threatened by habitat loss due to the spread of invasive weeds and brush fires. The species is also threatened by climate change and habitat degradation, and herbivory. Bidens amplectens is currently listed as endangered under the Endangered Species Act.
Dromus dromas, the dromedary pearlymussel or dromedary naiad, is a rare species of freshwater mussel in the family Unionidae. This aquatic bivalve mollusk is native to the Cumberland and Tennessee River systems in the United States, where it has experienced a large population decline. It is a federally listed endangered species of the United States.
The Cumberlandian Combshell is a species of freshwater mussel, an aquatic bivalve mollusk in the family Unionidae. This species is endemic to the United States, found mainly in the states of Tennessee and Virginia. This mussel resides in medium-sized streams to large rivers. The combshell is an endangered species and protected under the Endangered Species Act of 1973. The combshell is threatened by habitat modifications and pollution.
Lampsilis abrupta, the pink mucket or pink mucket pearly mussel, is a species of freshwater mussel, an aquatic bivalve mollusk in the family Unionidae, the river mussels. This species is endemic to the United States.
Obovaria retusa is a rare species of freshwater mussel in the family Unionidae, the river mussels. Its common names include golf stick pearly mussel
Asimina tetramera, commonly known as the four-petal pawpaw, is a rare species of small tree or perennial shrub endemic to Martin and Palm Beach Counties in the state of Florida. The species is currently listed as endangered under the Endangered Species Act and as endangered by the International Union for Conservation. The four-petal pawpaw is part of the Annonaceae family alongside other Asimina species.
Arctostaphylos confertiflora is a rare species of manzanita known by the common name Santa Rosa Island manzanita. This shrub is endemic to California, where it grows on the sandstone bluffs of Santa Rosa Island in the Channel Islands. This manzanita is listed as an endangered species by the United States Government.
Conradina is a genus of flowering plants in the mint family, Lamiaceae. Its common name is false rosemary, or rarely, short leaf rosemary. There are 7 species of Conradina, all native to the southeastern United States. Conradina verticillata grows on the Cumberland Plateau in Kentucky and Tennessee. The other five grow mainly in Florida. All of the species are closely related and there is some doubt about whether they are all separate. Most species occupy xeric habitats with well-drained soils composed of white sand. The genus Conradina was established by Asa Gray in 1870. It was named for the American botanist Solomon White Conrad.
Lindera melissifolia, common name pondberry or southern spicebush, is a stoloniferous, deciduous, aromatic shrub in the laurel family. This endangered species is native to the southeastern United States, and its demise is associated with habitat loss from extensive drainage of wetlands for agriculture and forestry. Restoration efforts are currently being conducted.
The Big Sandy crayfish, Cambarus callainus, are freshwater crustaceans of the family Cambaridae. They are found in the streams and rivers of Appalachia in Virginia, West Virginia, and Kentucky, in what is known as the Big Sandy watershed. Populations are often mistaken with Cambarus veteranus, but morphological and genetic data suggest that these are separate taxa; however, both are protected under the Endangered Species Act. There is very little information available on the Big Sandy crayfish because it is a relatively new species.
Conradina etonia is a rare species of shrub in the mint family known by the common name Etonia rosemary. It is endemic to Putnam County, Florida, where it is known from about 8 populations on Etoniah Creek State Forest containing fewer than 1000 total individuals. It has a specific habitat requirement and the main threat it faces is destruction and degradation of its habitat. It is a federally listed endangered species of the United States.
Conradina glabra is a rare species of shrub known by the common names Apalachicola rosemary or Apalachicola false rosemary. It is endemic to Liberty County, Florida, where it is known from about ten populations. It is found only in a small area and it is threatened by habitat destruction. It is a federally listed endangered species.
Calamovilfa arcuata, commonly known as Cumberland sandreed, is a species of flowering plant in the grass family. It is native to the southeastern United States, where it is found in river scour zones. Due to its specialized habitat, it has a highly localized range, found only on the Cumberland Plateau and in the Ouachita Mountains.
