''Alsophila'' × ''fagildei'' is a

tree fern The tree ferns are arborescent (tree-like) ferns that grow with a trunk elevating the fronds above ground level, making them trees. Many extant tree ferns are members of the order Cyatheales, to which belong the families Cyatheaceae (scaly tree ...

endemic Endemism is the state of a species being found in a single defined geographic location, such as an island, state, nation, country or other defined zone; organisms that are indigenous to a place are not endemic to it if they are also found elsew ...

to the Sierra de Moa and

Sierra del Purial Sierra (Spanish for "mountain range" and "saw", from Latin '' serra'') may refer to the following: Places Mountains and mountain ranges * Sierra de Juárez, a mountain range in Baja California, Mexico * Sierra de las Nieves, a mountain range i ...

in Guantánamo Province,

Cuba Cuba ( , ), officially the Republic of Cuba ( es, República de Cuba, links=no ), is an island country comprising the island of Cuba, as well as Isla de la Juventud and several minor archipelagos. Cuba is located where the northern Caribbea ...

. It is a natural interspecific hybrid between ''

Alsophila minor Alsophila may refer to: * ''Alsophila'' (moth), a genus of moth * ''Alsophila'' (plant), a genus of tree ferns {{Taxonomy disambiguation ...

'' and ''

Alsophila woodwardioides ''Alsophila woodwardioides'' is a species of tree fern native to Jamaica, Cuba Cuba ( , ), officially the Republic of Cuba ( es, República de Cuba, links=no ), is an island country comprising the island of Cuba, as well as Isla de la Ju ...

''. The spores of ''A.'' × ''fagildei'' are normal in appearance; Caluff and Serrano (2002) suggest that it might therefore be fertile. The

type Type may refer to: Science and technology Computing * Typing, producing text via a keyboard, typewriter, etc. * Data type, collection of values used for computations. * File type * TYPE (DOS command), a command to display contents of a file. * Ty ...

material was collected in the headwaters of

Río Toa Rio or Río is the Portuguese, Spanish, Italian, and Maltese word for "river". When spoken on its own, the word often means Rio de Janeiro, a major city in Brazil. Rio or Río may also refer to: Geography Brazil * Rio de Janeiro * Rio do Sul, a ...

, reserve of Cupeyal del Norte, Guantánamo Province at an altitude of 500 m on August 27, 1986.

References

fagildei Endemic flora of Cuba {{Alsophila-plant-stub