''Cyathea holdridgeana'',

synonym A synonym is a word, morpheme, or phrase that means exactly or nearly the same as another word, morpheme, or phrase in a given language. For example, in the English language, the words ''begin'', ''start'', ''commence'', and ''initiate'' are all ...

''Cyathea albomarginata'', is a species of tree fern native to Panamá and

Costa Rica Costa Rica (, ; ; literally "Rich Coast"), officially the Republic of Costa Rica ( es, República de Costa Rica), is a country in the Central American region of North America, bordered by Nicaragua to the north, the Caribbean Sea to the no ...

. It grows in wet forests at elevations of 2400–2800 m, considerably higher than most other tree ferns of Central America. ''Cyathea holdridgeana'' is a small tree with a trunk up to 50 cm tall. Petiole purplish-brown with white margins, scaly but not spiny; scales (= modified appendages attached to the margins of the petioles) bicolored, dark purple in the center but white along the margins; dead scales appearing totally white. Leaves bipinnate; pinnulae 10–12 cm longphoto of holotype of ''Cyathea albomarginata'' at Missouri Botanical Garden
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References

holdridgeana Flora of Costa Rica Flora of Panama {{Cyatheales-stub