''Thrinax'' is a

genus Genus (; : genera ) is a taxonomic rank above species and below family (taxonomy), family as used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In bino ...

in the palm family, native to the

Caribbean The Caribbean ( , ; ; ; ) is a region in the middle of the Americas centered around the Caribbean Sea in the Atlantic Ocean, North Atlantic Ocean, mostly overlapping with the West Indies. Bordered by North America to the north, Central America ...

. It is closely related to the genera ''

Coccothrinax ''Coccothrinax'' is a genus of palms in the family (biology), family Arecaceae. There are more than 50 species described in the genus, plus many Synonym (taxonomy), synonyms and subspecies. A new species (''Coccothrinax spirituana'') was describe ...

'', '' Hemithrinax'' and ''

Zombia ''Zombia antillarum'', commonly known as the zombie palm, is a species of Arecaceae, palm tree and the monotypic taxon, only member of the genus ''Zombia''. It is endemic (ecology), endemic to the island of Hispaniola (both the Dominican Republi ...

''. Flowers are small, bisexual and are borne on small stalks.

Taxonomy

In the first edition of ''

Genera Palmarum ''Genera Palmarum'' is a botany reference book that gives a detailed overview of the systematic biology of the palm family (Arecaceae). The first edition of ''Genera Palmarum'' was published in 1987. The second edition was published in 2008, with ...

'' (1987),

Natalie Uhl Natalie Whitford Uhl (1919–2017) was an American botanistIPNI: Natalie Whitf ...

and

John Dransfield John Dransfield (born 1945) is former head of palm research at the Royal Botanic Gardens, Kew, United Kingdom. Dransfield has written or contributed to several books on palms, notably both the first and second editions of '' Genera Palmarum''. ...

placed the genus ''Thrinax'' in

subfamily In biological classification, a subfamily (Latin: ', plural ') is an auxiliary (intermediate) taxonomic rank, next below family but more inclusive than genus. Standard nomenclature rules end botanical subfamily names with "-oideae", and zo ...

Coryphoideae The Coryphoideae is one of five subfamilies in the palm family, Arecaceae. It contains all of the genera with palmate leaves, excepting '' Mauritia'', '' Mauritiella'' and '' Lepidocaryum,'' all of subfamily Calamoideae, tribe Lepidocaryeae, ...

tribe The term tribe is used in many different contexts to refer to a category of human social group. The predominant worldwide use of the term in English is in the discipline of anthropology. The definition is contested, in part due to conflict ...

Corypheae Corypheae is a tribe of palm trees in the subfamily Coryphoideae. In previous classifications, tribe Corypheae included four subtribes: Coryphinae, Livistoninae, Thrinacinae and Sabalinae, but recent phylogenetic studies have led to the genera wi ...

and

subtribe Subtribe is a taxonomic category ranking which is below the rank of tribe and above genus. The standard suffix for a subtribe is -ina (in animals) or -inae (in plants). The first use of this word dates back to the late 19th century. An example of ...

Thrinacinae. Subsequent

phylogenetic In biology, phylogenetics () is the study of the evolutionary history of life using observable characteristics of organisms (or genes), which is known as phylogenetic inference. It infers the relationship among organisms based on empirical dat ...

analyses showed that the

Old World The "Old World" () is a term for Afro-Eurasia coined by Europeans after 1493, when they became aware of the existence of the Americas. It is used to contrast the continents of Africa, Europe, and Asia in the Eastern Hemisphere, previously ...

and

New World The term "New World" is used to describe the majority of lands of Earth's Western Hemisphere, particularly the Americas, and sometimes Oceania."America." ''The Oxford Companion to the English Language'' (). McArthur, Tom, ed., 1992. New York: ...

members of Thrinacinae are not closely related and as a consequence, ''Thrinax'' and related genera were transferred into their own tribe,

Cryosophileae Cryosophileae is a tribe of palms in the subfamily Coryphoideae. The tribe ranges from southern South America, through Central America, into Mexico and the Caribbean. It includes New World genera formerly included in the tribe Thrinacinae, whic ...

. In 2008, ''

Leucothrinax morrisii ''Leucothrinax morrisii'', the Key thatch palm, is a small palm which is native to the Greater Antilles (except Jamaica), northern Lesser Antilles, The Bahamas and Florida and the Florida Keys in the United States. Until 2008 it was known as ' ...

'' (formerly ''T. morrisii'') was split from ''Thrinax'' after

studies showed that its inclusion in ''Thrinax'' would render that genus

paraphyletic Paraphyly is a taxonomic term describing a grouping that consists of the grouping's last common ancestor and some but not all of its descendant lineages. The grouping is said to be paraphyletic ''with respect to'' the excluded subgroups. In co ...

Species

''Thrinax'' consists of three species.

References

{{Taxonbar, from=Q142326 Arecaceae genera Trees of the Caribbean Taxa named by Olof Swartz