''Chelyocarpus'' is a genus of small to medium-sized
fan palm
Fan palm as a descriptive term can refer to any of several different kinds of palms ( Arecaceae) in various genera with leaves that are palmately lobed (rather than pinnately compound). Most are members of the subfamily Coryphoideae, though a f ...
s which are native to northwestern South America. Some are upright trees, while others creep along the ground. Species are used for thatch, to weave hats, stuff pillows and as a source of salt.
Description
''Chelyocarpus'' is a type of small to medium-sized, single or multi-stemmed palms with fan shaped leaves. Stems range from short and creeping along the ground to as much as tall. Stem diameters range from . Individuals have between 10 and 20 leaves with circular blades, the lower surface of which is usually whitish in colour. The flowers are small and bisexual—they have both male and female sex organs in the same flower. The fruit have one or two seeds and ripen to a greenish yellow or brown.
Taxonomy
The name ''Chelyocarpus'' is derived from
Ancient Greek
Ancient Greek includes the forms of the Greek language used in ancient Greece and the ancient world from around 1500 BC to 300 BC. It is often roughly divided into the following periods: Mycenaean Greek (), Dark Ages (), the Archaic peri ...
and means "turtle
carapace
A carapace is a Dorsum (biology), dorsal (upper) section of the exoskeleton or shell in a number of animal groups, including arthropods, such as crustaceans and arachnids, as well as vertebrates, such as turtles and tortoises. In turtles and tor ...
-fruited", a reference to cracked surface of the fruits of the genus, which resemble the shell of a turtle.
The species was first described by German botanist
Carl Dammer in 1920.
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),
and
John Dransfield
John Dransfield (born 1945) is an honorary research fellow and former head of palm research at the Royal Botanic Gardens, Kew, United Kingdom, as well as being an authority on the phylogenetic classification of palms.
Dransfield has written or ...
placed the genus ''Chelyocarpus'' 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 subfamily botanical names with "-oideae", and zoologi ...
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, subtr ...
,
tribe
The term tribe is used in many different contexts to refer to a category of human social group. The predominant worldwide usage of the term in English language, English is in the discipline of anthropology. This definition is contested, in p ...
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 ...
and
subtribe Thrinacinae Subsequent
phylogenetic
In biology, phylogenetics (; from Greek φυλή/ φῦλον [] "tribe, clan, race", and wikt:γενετικός, γενετικός [] "origin, source, birth") is the study of the evolutionary history and relationships among or within groups o ...
analysis showed that the
Old World
The "Old World" is a term for Afro-Eurasia that originated in Europe , after Europeans became aware of the existence of the Americas. It is used to contrast the continents of Africa, Europe, and Asia, which were previously thought of by the ...
and
New World
The term ''New World'' is often used to mean the majority of Earth's Western Hemisphere, specifically the Americas."America." ''The Oxford Companion to the English Language'' (). McArthur, Tom, ed., 1992. New York: Oxford University Press, p. 3 ...
members of Thrinacinae are not closely related. As a consequence, ''Chelyocarpus'' and related genera have been placed in 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, wh ...
.
''Chelyocarpus'' is considered to form the
sister clade
In phylogenetics, a sister group or sister taxon, also called an adelphotaxon, comprises the closest relative(s) of another given unit in an evolutionary tree.
Definition
The expression is most easily illustrated by a cladogram:
Taxon A and t ...
to the rest of the tribe.
Distribution
Three species of ''Chelyocarpus'' are native to the western
Amazon
Amazon most often refers to:
* Amazons, a tribe of female warriors in Greek mythology
* Amazon rainforest, a rainforest covering most of the Amazon basin
* Amazon River, in South America
* Amazon (company), an American multinational technology c ...
, while the fourth is from western Colombia. ''
Chelyocarpus chuco'' is found in
Brazil
Brazil ( pt, Brasil; ), officially the Federative Republic of Brazil (Portuguese: ), is the largest country in both South America and Latin America. At and with over 217 million people, Brazil is the world's fifth-largest country by area ...
and
Bolivia
, image_flag = Bandera de Bolivia (Estado).svg
, flag_alt = Horizontal tricolor (red, yellow, and green from top to bottom) with the coat of arms of Bolivia in the center
, flag_alt2 = 7 × 7 square p ...
, ''
C. ulei'' in Colombia,
Ecuador
Ecuador ( ; ; Quechua: ''Ikwayur''; Shuar: ''Ecuador'' or ''Ekuatur''), officially the Republic of Ecuador ( es, República del Ecuador, which literally translates as "Republic of the Equator"; Quechua: ''Ikwadur Ripuwlika''; Shuar: ''Eku ...
,
Peru
, image_flag = Flag of Peru.svg
, image_coat = Escudo nacional del Perú.svg
, other_symbol = Great Seal of the State
, other_symbol_type = Seal (emblem), National seal
, national_motto = "Fi ...
and Brazil, ''C. repens'' near
Iquitos
Iquitos (; ) is the capital city of Peru's Maynas Province and Loreto Region. It is the largest metropolis in the Peruvian Amazon, east of the Andes, as well as the ninth-most populous city of Peru. Iquitos is the largest city in the world th ...
, Peru, and ''C. dianeurus'' is found in the Pacific lowlands of Colombia.
Uses
The leaves of ''Chelyocarpus chuco'' are used for thatch and to weave hats. The woolly covering of the leaf sheaths of ''C. dianeurus'' are used to stuff pillows, and salt is extracted from the trunks of ''C. ulei''.
References
{{Taxonbar, from=Q142264
Arecaceae genera
Taxonomy articles created by Polbot
Taxa named by Carl Lebrecht Udo Dammer