Desmoncus

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Desmoncus
Naturalist on the River Amazons figure 3.png
1863 Illustration from
Naturalist on the River Amazons
Scientific classification OOjs UI icon edit-ltr.svg
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Monocots
Clade: Commelinids
Order: Arecales
Family: Arecaceae
Subfamily: Arecoideae
Tribe: Cocoseae
Genus: Desmoncus
Mart.
Synonyms [1]
  • AtitaraBarrère ex Kuntze 1891, illegitimate homonym, not Marcgr. ex Juss. 1816
  • DesmonchusDesf., spelling variation

Desmoncus is a genus of mostly climbing, spiny palms native to the Neotropics. The genus extends from Mexico in the north to Brazil and Bolivia in the south, with two species present in the southeastern Caribbean (Trinidad and the Windward Islands). [1] [2] [3]

Contents

Description

Desmoncus is best known as a genus of climbing palms. Twenty-three of the 24 species recognised by Andrew Henderson in his revision of the genus are climbers; only one, D. stans is free-standing. [3] :7–16 Almost all Neotropical climbing palms belong to Desmoncus—the one exception being Chamaedorea elatior. [3] :3

Carl Friedrich Philipp von Martius's drawing of Desmoncus polyacanthos shows the features of the leaf (sheath, petiole, rachis, leaflets, and cirrus) and the inflorescence with its associated bract. Desmoncus polyacanthos, da Colecao Brasiliana Iconografica.jpg
Carl Friedrich Philipp von Martius's drawing of Desmoncus polyacanthos shows the features of the leaf (sheath, petiole, rachis, leaflets, and cirrus) and the inflorescence with its associated bract.
Most Desmoncus species climb using grappling hook-like structures called acanthophylls. Desmoncus orthacanthos Mart. - Flickr - Alex Popovkin, Bahia, Brazil (11).jpg
Most Desmoncus species climb using grappling hook-like structures called acanthophylls.

Desmoncus leaves are pinnately compound and are made up of a leaf sheath, petioles, rachis, and individual leaflets. The ends of the leaves are modified into a climbing structure called a cirrus. Instead of leaflets, the cirrus usually has grappling hook-like structures called acanthophylls; in some species the cirrus is less well developed and is almost absent in D. stans, the non-climbing species. [3] :8–10

All parts of the leaves, including the leaflets themselves, are covered with spines. Most species have straight spines that are over 1 centimetre (0.4 in) long, but a few species have curved spines that are less than 1 cm long. [3] :8–10

Taxonomy

Acrocomia

Desmoncus

Aiphanes

Astrocaryum

Bactris

Simplified diagram of the relationship between members of the subtribe Bactridinae, based on plastid and nuclear DNA phylogeny. [4]

Desmoncus orthacanthos

Bactris gasipaes

Aiphanes aculeata *

Acrocomia crispa

Acrocomia aculeata

Relationship between members of the subtribe Bactridinae, based on plastid DNA phylogeny. [5] *Aiphanes aculeata is a botanical synonym of A. horrida .

John Dransfield and colleagues put Desmoncus in the subfamily Arecoideae, the tribe Cocoseae and the subtribe Bactridinae, together with Aiphanes , Acrocomia , Astrocaryum and Bactris . [6]

The genus was described by Carl Friedrich Philipp von Martius in 1824. The first species described was D. polyacanthos . [3] :16 Martius later described six additional species that he placed in the genus. In this 1881 Flora Brasiliensis, Carl Georg Oscar Drude recognised 17 species. João Barbosa Rodrigues recognised 28 species in his 1903 work Setum Palmarum Brasiliensis. [3] :3–4

Max Burret published a revision of the entire genus in 1934. Burret described nine new species and ended up recognising a total of 41 species. In the 1940s, Liberty Hyde Bailey added 14 additional species to the genus Desmoncus. Jan Wessels Boer rejected the species concept used by Bailey, Barbosa Rodrigues, and Burret as being too narrow and ended up recognising only seven species [3] :3–4 In his 2011 revision of the genus, Andrew Henderson recognised 24 species. [3]

Distribution

Desmoncus ranges from Mexico in the north to Bolivia and Brazil in the south. Most species occur at lower elevations, but some species range as high as 1,000 metres (3,300 ft) above sea level. The species are mostly found in lowland tropical rainforest. Twelve species occur in Colombia, the most species-rich country, while 10 are found in Brazil. [3] :7

Species

Related Research Articles

<i>Bactris</i> Genus of palms

Bactris is a genus of spiny palms which are native to Mexico, South and Central America and the Caribbean. Most species are small trees about 2 m tall, but some are large trees while others are shrubs with subterranean stems. They have simple or pinnately compound leaves and yellow, orange, red or purple-black fruit. The genus is most closely related to several other spiny palms—Acrocomia, Aiphanes, Astrocaryum and Desmoncus. The fruit of several species is edible, most notably B. gasipaes, while others are used medicinally or for construction.

<i>Aiphanes</i> Genus of spiny palms native to tropical South and Central America and the Caribbean

Aiphanes is a genus of spiny palms which is native to tropical regions of South and Central America and the Caribbean. There are about 26 species in the genus, ranging in size from understorey shrubs with subterranean stems to subcanopy trees as tall as 20 metres (66 ft). Most have pinnately compound leaves ; one species has entire leaves. Stems, leaves and sometimes even the fruit are covered with spines. Plants flower repeatedly over the course of their lifespan and have separate male and female flowers, although these are borne together on the same inflorescence. Although records of pollinators are limited, most species appear to be pollinated by insects. The fruit are eaten by several birds and mammals, including at least two species of amazon parrots.

<i>Calyptrogyne</i> Genus of palms

Calyptrogyne is a genus in the palm family (Arecaceae). It is distributed across Central America, Colombia, and southern Mexico, with 11 of the 17 known species endemic to Panama. Calyptrogyne ghiesbreghtiana is the most widespread and best studied species in this genus.

Bactris campestris is a small spiny palm which grows in multi-stemmed clumps in savannas and low forests in northern South America from Colombia to the Guianas, Trinidad and Tobago, and northern Brazil.

<i>Oenocarpus</i> Genus of palms

Oenocarpus is a genus of pinnate-leaved palms (Arecaceae) native to Trinidad, southern Central and tropical South America. With nine species and one natural hybrid, the genus is distributed from Costa Rica and Trinidad in the north to Brazil and Bolivia in the south.

<i>Prestoea</i> Genus of palms

Prestoea is a genus of palms native to the Caribbean, Central and South America. Its range extends from Nicaragua and the Greater Antilles in the north to Brazil and Bolivia in the south.

<i>Wettinia</i> Genus of palms

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<i>Desmoncus polyacanthos</i> Species of palm

Desmoncus polyacanthos, the jacitara palm, is a spiny, climbing palm native to the southern Caribbean and tropical South America. Stems grow clustered together, and are 2–12 m long and 0.5–2 cm in diameter. Petioles, rachis, cirrus and peduncular bracts are covered with short, curved spines. Two varieties are recognised: D. polyacanthos var. polyacanthos and D. polyacanthos var. prunifer A.J.Hend.

<i>Wendlandiella</i> Genus of palms

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<i>Socratea</i> Genus of palms

Socratea is a genus of five species of palms found in tropical Central America and South America.

<i>Pholidostachys</i> Genus of palms

Pholidostachys is a genus of palms found in Central America and northwestern South America.

<i>Lepidocaryum</i> Genus of palms

Lepidocaryum is a monotypic genus of flowering plant in the palm family from South America where the lone species, Lepidocaryum tenue, is commonly called poktamui. Nine species names have been published, but palm taxonomists currently agree that just one variable species includes them all. The most reduced member of the Lepidocaryeae, it is similar in appearance to three closely related genera, Mauritia, Mauritiella, and Lytocaryum. The genus name combines the Greek words for "scale" and "nut" and the species epithet is Latin for "thin".

<i>Mauritiella</i> Genus of palms

Mauritiella is a dioecious genus of flowering plant in the palm family found in South America where it is commonly called buriti. It is named after the similar and closely related genus Mauritia.

Aiphanes deltoidea is a species of palm which is native to northeastern South America.

Aiphanes eggersii, known locally as corozo, is a species of spiney, pinnately leaved palm which is native to the coastal plain of Ecuador and adjacent dry forests of Peru.

<span class="mw-page-title-main">Cryosophileae</span> Tribe of palms

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, which was split after molecular phylogenetic studies showed that Old World and New World members of the tribe were not closely related.

<i>Prestoea acuminata</i> Species of palm

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<span class="mw-page-title-main">Geonomateae</span> Tribe of palms

Geonomateae is a palm tribe in the subfamily Arecoideae. It is an important Neotropical group due to its wide distribution across Central and South America, its diversity and abundance, and the use of a number of species by local human populations. The distribution of the tribe stretches from southeast Mexico down through Central America and into South America, notably Brazil and Bolivia, and species are also found in the Greater and Lesser Antilles. This tribe consists of a group of understory and sub-canopy palms that populate both tropical lowland and montane forests. While members of this group are relatively easy to collect, as they are not canopy palms or spiny palms, and are well represented in herbaria, the taxonomy and phylogeny of the species within the tribe are still uncertain. The resolution of the tribe has been disputed despite the fact that tribe's species are characterized by three morphological synapomorphies: the petals of pistillate flowers are basally connate, the presence of slender and elongate styles, and the flowers are borne in pits in the rachillae.

Bactridinae is a subtribe of plants in the family Arecaceae found in the New World. Genera in the subtribe are:

References

  1. 1 2 Kew World Checklist of Selected Plant Families
  2. Govaerts, R. & Dransfield, J. (2005). World Checklist of Palms: 1–223. The Board of Trustees of the Royal Botanic Gardens, Kew.
  3. 1 2 3 4 5 6 7 8 9 10 Henderson, Andrew (2011-12-14). "A revision of Desmoncus (Arecaceae)". Phytotaxa. 35 (1): 1–88. doi: 10.11646/phytotaxa.35.1.1 . ISSN   1179-3163.
  4. Eiserhardt, Wolf L.; Jean-Christophe Pintaud; Conny Asmussen-Lange; William J. Hahn; Rodrigo Bernal; Henrik Balslev; Finn Borchsenius (2011). "Phylogeny and divergence times of Bactridinae (Arecaceae, Palmae) based on plastid and nuclear DNA sequences". Taxon. 60 (2): 485–498. doi:10.1002/tax.602016.
  5. Asmussen, Conny B.; John Dransfield; Vinnie Deickmann; Anders S. Barfod; Jean-Christophe Pintaud; William J. Baker (2006). "A new subfamily classification of the palm family (Arecaceae): evidence from plastid DNA phylogeny". Botanical Journal of the Linnean Society. 151 (1): 15–38. doi: 10.1111/j.1095-8339.2006.00521.x .
  6. 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. Royal Botanic Gardens, Kew. 60 (4): 559–69. JSTOR   25070242.