Dendroseris neriifolia is a species of flowering plant

Flowering plant

The flowering plants , also known as Angiospermae or Magnoliophyta, are the most diverse group of land plants. Angiosperms are seed-producing plants like the gymnosperms and can be distinguished from the gymnosperms by a series of synapomorphies...

 in the Asteraceae

Asteraceae

The Asteraceae or Compositae , is an exceedingly large and widespread family of vascular plants. The group has more than 22,750 currently accepted species, spread across 1620 genera and 12 subfamilies...

 family, with droopy, elongated leaves and small yellow-white flowers.
The plant was originally native to Chile

Chile

Chile ,officially the Republic of Chile , is a country in South America occupying a long, narrow coastal strip between the Andes mountains to the east and the Pacific Ocean to the west. It borders Peru to the north, Bolivia to the northeast, Argentina to the east, and the Drake Passage in the far...

 but is now found only on Robinson Crusoe Island

Robinson Crusoe Island

Robinson Crusoe Island , formerly known as Más a Tierra , or Aguas Buenas, is the largest island of the Chilean Juan Fernández archipelago, situated 674 kilometres west of South America in the South Pacific Ocean...

. It has been described as the world's rarest plant: only one specimen is known to exist in the wild, although there exist other human-cultivated specimens. It is classified as critically endangered by the World Conservation Monitoring Centre.