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Thrinax radiata0.jpg
Thrinax radiata
Scientific classification
Kingdom: Plantae
(unranked): Angiosperms
(unranked): Monocots
(unranked): Commelinids
Order: Arecales
Family: Arecaceae
Subfamily: Coryphoideae
Tribe: Cryosophileae[1]
Genus: Thrinax

Thrinax ekmaniana
Thrinax excelsa
Thrinax parviflora
Thrinax radiata


Porothrinax H.Wendl. ex Griseb.

Thrinax is a genus in the palm family, native to the Caribbean. It is closely related to the genera Coccothrinax, Hemithrinax and Zombia.[3] Flowers are small, bisexual and are borne on small stalks.

Thrinax consists of four species. Three of them are single-island endemics - Thrinax ekmaniana is restricted to the Mogotes de Jumagua hills in Cuba, while Thrinax excelsa and Thrinax parviflora are endemic to Jamaica. The fourth species, Thrinax radiata, is more widespread; it is found across the Greater Antilles, the Bahamas, south Florida, Mexico and Central America.











Simplified phylogeny of the tribe Cryosophileae (except Trithrinax and Sabinaria) based on the nuclear genes PRK and RPB2.[4]

In the first edition of Genera Palmarum (1987), Natalie Uhl and John Dransfield placed the genus Thrinax in subfamily Coryphoideae, tribe Corypheae and subtribe Thrinacinae.[5] Subsequent phylogenetic analyses showed that the Old World and New World members of Thrinacinae are not closely related and as a consequence, Thrinax and related genera were transferred into their own tribe, Cryosophileae.[1] In 2008, Leucothrinax morrisii (formerly T. morrisii) was split from Thrinax after phylogenetic studies showed that its inclusion in Thrinax would render that genus paraphyletic.[6]


  1. ^ a b Dransfield, John; Natalie W. Uhl; Conny B. Asmussen; William J. Baker; Madeline M. Harley; Carl E. Lewis (2005). "A New Phylogenetic Classification of the Palm Family, Arecaceae". Kew Bulletin. 60 (4): 559–69. JSTOR 25070242.
  2. ^ "Thrinax". World Checklist of Selected Plant Species. Royal Botanic Gardens, Kew. Retrieved 10 April 2010.
  3. ^ Henderson, Andrew; Gloria Galeano; Rodrigo Bernal (1995). Field Guide to the Palms of the Americas. Princeton, New Jersey: Princeton University Press. ISBN 0-691-08537-4.
  4. ^ Roncal, Julissa; Scott Zona; Carl E. Lewis (2008). "Molecular Phylogenetic Studies of Caribbean Palms (Arecaceae) and Their Relationships to Biogeography and Conservation". Botanical Review. 74 (1): 78–102. doi:10.1007/s12229-008-9005-9.
  5. ^ Uhl, Natalie E.; John Dransfield (1987). Genera Palmarum: a classification of palms based on the work of Harold E. Moore Jr. Lawrence, Kansas: The L. H. Bailey Hortorium and the International Palm Society.
  6. ^ Lewis, Carl E.; Scott Zona (2008). "Leucothrinax morrisii, a new name for a familiar Caribbean palm". Palms. 52 (2): 84–88.