Thrinax

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Thrinax
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
Species

Thrinax ekmaniana
Thrinax excelsa
Thrinax parviflora
Thrinax radiata

Synonyms[2]

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.

Taxonomy[edit]

Coccothrinax

Hemithrinax

Leucothrinax

Zombia

Thrinax

Schippia

Cryosophila

Itaya

Chelyocarpus

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]

References[edit]

  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.