The golden coquí is a rare species of frog endemic to Puerto Rico.
Auerodendron pauciflorum is a rare species of flowering plant in the family Rhamnaceae. One English language common name is turtlefat. It is endemic to Puerto Rico, where it is known from only one population in Isabela. At the time the plant was federally listed as an endangered species by the United States in 1994, only ten individual plants were known to exist. By 1997, there were 19 known specimens.
Banara vanderbiltii is a rare species of plant in the willow family known by the common name palo de ramon. It is endemic to Puerto Rico, where there are fewer than 20 known individuals left in the wild. At the time it was listed as an endangered species of the United States in 1987, there were only six plants remaining.
Buxus vahlii, or Vahl's boxwood, is a rare species of plant in the boxwood family. It is native to Puerto Rico and St. Croix in the U.S. Virgin Islands, where it is known from no more than four populations total. It has probably never been very common, but its distribution has been reduced by deforestation and other human disturbance of its habitat. At the time it was listed as an endangered species of the United States in 1985, it was thought to be endemic to Puerto Rico. Reports that it existed in Jamaica have not been confirmed. A few individuals have been located in St. Croix, some of which are within Sandy Point National Wildlife Refuge.
Callicarpa ampla, also called the capa rose, is a species of plant in the family Lamiaceae. It is found in Puerto Rico in the Caribbean region. It is threatened by habitat loss and is a critically endangered plant species.
Calyptranthes thomasiana is a rare species of plant in the family Myrtaceae. It is found on three islands in the Caribbean. There are fewer than 250 individuals total divided amongst the islands of Vieques in Puerto Rico, St. John in the United States Virgin Islands, and Virgin Gorda in the British Virgin Islands. It has been extirpated from the wild on Saint Thomas, U.S. Virgin Islands, where it was first described in 1855, and now only grows there in cultivation.
Eugenia haematocarpa is a rare species of plant in the family Myrtaceae. It is endemic to Puerto Rico. It is classified as an endangered species by the U.S. Fish and Wildlife Service and there has been a plan for its recovery in place for some years. Its common names include uvillo and Luquillo Mountain stopper.
Goetzea elegans, (also called beautiful goetzea, mata buey, or matabuey, is a species of plant in the Solanaceae or nightshade family of flowering plants. It is endemic to Puerto Rico. Today it is limited to the northwestern corner of the island because of deforestation and other consumption of its habitat for human use. It is federally listed as an endangered species in the United States.
Myrcia neocambessedeana was a species of plant in the family Myrtaceae. It was endemic to Brazil.
Ilex cookii is a species of plant in the family Aquifoliaceae. It is endemic to Puerto Rico. It is threatened by habitat loss. It is a federally listed endangered species of the United States.
Myrcia sintenisiana is a species of flowering plant in the family Myrtaceae. It is endemic to Puerto Rico, where it is limited to the Luquillo Mountains. It occurs in El Yunque National Forest in dwarf forest habitat on wet mountain ridges. Its common name is beruquillo.
Myrcia clarendonensis is a species of plant in the family Myrtaceae. It is endemic to Jamaica.
Myrcia maestrensis is a species of plant in the family Myrtaceae. It is endemic to Cuba.
Myrcia manacalensis is a species of plant in the family Myrtaceae. It is endemic to Cuba.
Myrcia calcicola is a species of plant in the family Myrtaceae. It is endemic to Jamaica and is threatened by habitat loss.
Myrcia pentagona is a species of plant in the family Myrtaceae. It is endemic to Peru.
Myrcia skeldingii was a species of plant in the family Myrtaceae. It was endemic to Jamaica. It became extinct due to habitat loss.
Pleodendron macranthum (chupacallos) is a rare species of tree in the family Canellaceae. It is endemic to Puerto Rico, where there are only three tiny populations remaining. Two individual plants are located in El Yunque and 8 to 10 plants remain in Río Abajo State Forest. This tree is a federally listed endangered species of the United States.
The Puerto Rican rock frog, Eleutherodactylus cooki, also known as the Puerto Rican cave-dwelling frog or rock coqui, and locally as coquí guajón, or guajón for brevity, is a threatened frog species from the coqui genus. This unique species of tropical frogs dwells primarily in crevices and grottos in the Cuchilla de Panduras mountain range in southeastern Puerto Rico. The native name guajón is derived from its habitat, guajonales, which are caves formed by rock formations between huge stones. Despite being the state animal and considered emblematic of the region, of the 17 species of coquí, three are believed to be extinct and the rest are rare and declining in numbers. The Puerto Rican rock frog is extremely restricted in geographical distribution. The frog is threatened due to deforestation, agricultural, rural, and industrial development, and the associated infrastructure. It is sometimes called the “demon of Puerto Rico" because of its eerie call and phantom-like appearance. The species was first described by American herpetologist, Chapman Grant in 1932.
