Flora of Juan Fernández Islands

Lactoris fernandeziana is a flowering shrub endemic to the cloud forest of Masatierra – Robinson Crusoe Island, of the Juan Fernández Islands archipelago of Chile. It is the only extant species in the genus Lactoris.

Thyrsopteris is a genus of tree fern. It contains a single living species, Thyrsopteris elegans, endemic to the Juan Fernandez Archipelago off the coast of Chile. The oldest records of the genus are the species Thyrsopteris cretacea and Thyrsopteris cyathindusia which were described from the Burmese amber of Myanmar, dating to the Cenomanian of the Cretaceous period, around 99 million years ago. Other fossil species include Thyrsopteris antiqua from the Upper Cretaceous of Chile and Thyrsopteris shenii from the Paleogene of King George Island, Antarctica A thyrsopterid rachis is also known

Sophora fernandeziana is a species of flowering plant in the family Fabaceae, that is endemic to the Juan Fernández Islands of Chile. It is threatened by habitat loss.

Santalum fernandezianum, also known as the Chile sandalwood, was a species of plant in the Santalaceae family. It was endemic to the Juan Fernández Islands off the coast of Chile. Last seen in 1908 by Carl Skottsberg, the species was cut to extinction for its aromatic wood.

Thyrsopteris is a genus of tree fern. It contains a single living species, Thyrsopteris elegans, endemic to the Juan Fernandez Archipelago off the coast of Chile. The oldest records of the genus are the species Thyrsopteris cretacea and Thyrsopteris cyathindusia which were described from the Burmese amber of Myanmar, dating to the Cenomanian of the Cretaceous period, around 99 million years ago. Other fossil species include Thyrsopteris antiqua from the Upper Cretaceous of Chile and Thyrsopteris shenii from the Paleogene of King George Island, Antarctica A thyrsopterid rachis is also known

Sophora masafuerana is a species of flowering plant in the family Fabaceae, that is endemic to the Juan Fernández Islands of Chile. It is threatened by habitat loss.

Megalachne is a genus of Chilean plants in the grass family, found only on the Juan Fernández Islands in the Pacific Ocean, part of the Republic of Chile. It contains a single species, Megalachne berteroniana. A genetic analysis found it to be most closely related to the extinct Podophorus, also endemic to the Juan Fernández archipelago. This clade was in turn found to be nested within a paraphyletic Festuca, most closely related to F. pampeana of South America. Several species formerly included in genus Megalachne are now considered synonyms of species placed in other genera: Megalachne

Cuminia is a genus of flowering plant in the family Lamiaceae, first described in 1835. It contains only one known species, Cuminia eriantha. It is endemic to Robinson Crusoe Island, one of the Juan Fernández Islands in the southeast Pacific, off the coast of Chile and politically a part of that country. Two varieties are recognized, regarded by some as distinct species: Cuminia eriantha var. eriantha Cuminia eriantha var. fernandezia (Colla) Harley The species is listed as "critically endangered".

Centaurodendron is a genus of flowering plants in the tribe Cardueae within the family Asteraceae. The entire genus is endemic to the Juan Fernández Islands in the southern Pacific Ocean, part of the Republic of Chile.

Robinsonia is a genus of plants in the groundsel tribe within the sunflower family. All the species are endemic to the Juan Fernández Islands in the Pacific Ocean, part of the Republic of Chile. The genus is named for the fictional character Robinson Crusoe, purportedly shipwrecked in this chain of islands.

Solanum fernandezianum is a species of flowering plant in the family Solanaceae. It is endemic to the Juan Fernández Islands in Chile.

Rhaphithamnus venustus, known locally as Juan Bueno, is a species of plant in the family Verbenaceae. It is endemic to the Juan Fernández Islands, an archipelago west of Chile. It is threatened by habitat loss. Juan Bueno flowers are an important source of nectar for the Juan Fernández firecrown (Sephanoides fernandensis), a hummingbird that is also only found on the Juan Fernández Islands but is almost extinct today. The hummingbird, in turn, may be an important pollinator for the plant.

Myrceugenia schulzei is a species of plant in the family Myrtaceae. It is endemic to Alejandro Selkirk Island, of the Juan Fernández Islands archipelago in the Pacific Ocean, territory of the Republic of Chile. It is threatened by habitat loss.

Ochagavia elegans is a plant species in the genus Ochagavia, endemic to Robinson Crusoe Island in the Juan Fernández Islands of Chile. Distinguished by its caulescent (stem-forming) habit and thick, spiny leaves, Ochagavia elegans typically grows on steep rocky cliffs in xeric, high-insolation environments. The species forms large colonies through vegetative reproduction and is morphologically and geographically distinct from its mainland relatives, Ochagavia carnea and Ochagavia chamissonis.

Greigia berteroi is a species of flowering plant in the family Bromeliaceae. This species is endemic to the Juan Fernández Islands in the South Pacific, off the coast of Chile. The species is listed as critically endangered.

Carex fernandezensis is a tussock-forming species of perennial sedge in the family Cyperaceae. It is native to the Juan Fernández Islands.

Megalachne is a genus of Chilean plants in the grass family, found only on the Juan Fernández Islands in the Pacific Ocean, part of the Republic of Chile. It contains a single species, Megalachne berteroniana. A genetic analysis found it to be most closely related to the extinct Podophorus, also endemic to the Juan Fernández archipelago. This clade was in turn found to be nested within a paraphyletic Festuca, most closely related to F. pampeana of South America. Several species formerly included in genus Megalachne are now considered synonyms of species placed in other genera: Megalachne

Juania australis, the Chonta palm, is a species of flowering plant in the family Arecaceae, the only species in the genus Juania. It is a solitary trunked palm tree which is endemic to the Juan Fernández Islands archipelago in the southeast Pacific Ocean west of Chile. This palm is slow growing and has a green trunk; plants are either male or female. It is threatened by habitat loss. Only one mature tree grows outside its native island habitat. It is assessed as critically endangered on the IUCN Red List of Threatened Species.

Gunnera masafuerae, common name pangue, is a very large herbaceous plant endemic to Alejandro Selkirk Island (Más Afuera) in the Juan Fernandez Islands. It is the second largest species in the genus after Gunnera manicata. The blade, or lamina is up to 9 feet 5 inches (2.87 m) wide borne upon massive stalks, or petioles up to 4.75 inches (12.1 cm) thick; the thickest of any dicot. The inflorescence is a panicle composed of many tiny dimerous flowers (i.e. having two sepals, two petals, two stamens and two stigmas), and is up to 5 feet 9 inches (1.75 m) long. This is one of the three Gunnera

Carex stuessyi is a tussock-forming species of perennial sedge in the family Cyperaceae. It is native to the Juan Fernández Islands.

Carex berteroniana is a species of sedge native to the Juan Fernández Islands.

Sonchus marginatus, synonym Dendroseris marginata, is a species of flowering plant in the family Asteraceae. It is endemic to the Juan Fernández Islands of Chile. It is threatened by habitat loss.

Zanthoxylum mayu, synonym Fagara mayu, is a species of flowering plant in the family Rutaceae. It is a tree endemic to Robinson Crusoe Island in the Juan Fernández Archipelago of Chile. It is threatened by habitat loss.

Sonchus splendens, synonym Dendroseris macrophylla, is a species of flowering plant in the family Asteraceae. It is endemic to the Juan Fernández Islands of Chile. It is threatened by habitat loss.

Sonchus phoeniciformis, synonym Dendroseris pinnata, is a species of flowering plant in the family Asteraceae. It is endemic to the Juan Fernández Islands of Chile. It is threatened by habitat loss.

Sonchus brassicifolius, synonym Dendroseris litoralis, is a species of flowering plant in the daisy and sunflower family Asteraceae. It is a small evergreen tree species known as the cabbage tree. It is endemic to the Juan Fernández Islands, which lie in the southeast Pacific, off the west coast of Chile. It is native only to the tiny, volcanic Robinson Crusoe Island, home of the famed Juania australis and many other endemic plants. The species is threatened by habitat loss and has been brought back from the brink of extinction. It had been reduced to only a few individuals by feral goats on

Sonchus pruinatus, synonym Dendroseris pruinata, is a species of flowering plant in the family Asteraceae. It is endemic to the Juan Fernández Islands of Chile. It is threatened by habitat loss.

Sonchus neriifolius, synonym Dendroseris neriifolia is a species of flowering plant in the family Asteraceae. It is a tree with droopy, elongated leaves and small yellow-white flowers. The plant was originally native to Continental Chile but is now endemic to Robinson Crusoe Island. The plant is endangered and very rare: only two specimens are known to exist in a ravine in the eastern part of the island, although there exist other human-cultivated specimens. It is classified as critically endangered by the World Conservation Monitoring Centre.

Sonchus sinuatus, synonym Dendroseris macrantha, is a species of flowering plant in the family Asteraceae. It is endemic to the Juan Fernández Islands of Chile. It is threatened by habitat loss.

Centaurodendron dracaenoides is a species of flowering plant in the family Asteraceae. It is endemic to Robinson Crusoe Island in the Juan Fernández Islands of Chile. It is threatened by habitat loss.