Geonoma | |
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Young Geonoma undata | |
Scientific classification | |
Kingdom: | Plantae |
Clade: | Tracheophytes |
Clade: | Angiosperms |
Clade: | Monocots |
Clade: | Commelinids |
Order: | Arecales |
Family: | Arecaceae |
Subfamily: | Arecoideae |
Tribe: | Geonomateae |
Genus: | Geonoma Willd. |
Species | |
64, see text | |
Synonyms | |
GynestumPoit. Contents |
Geonoma is a genus of small to medium-sized palms native to the forest understorey of tropical Central and South America.
This palm genus is one of the largest in the Neotropics. [1] Its 64 species are distributed from Mexico and Haiti in the north to Paraguay in the south; two are found in the Lesser Antilles. [2]
In South America, the leaves of species such as Geonoma deversa , Geonoma orbignyana , and Geonoma macrostachys are economically important for their use in thatching roofs. [3]
The genus is a member of the palm tribe Geonomateae (Arecaceae: Arecoideae), 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. [4] The distribution of the tribe Geonomeae 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. [5] 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. [6] [7] The resolution of the tribe has been disputed despite the fact that Geonomateae 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. [8]
The following species are currently recognized: [9]
Calamus is a genus of flowering plants in the palm family Arecaceae that are among several genera known as rattan palms. There are an estimated 400 species in this genus, all native to tropical and subtropical Asia, Africa, and Australia.
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.
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.
Syagrus is a genus of Arecaceae (palms), native to South America, with one species endemic to the Lesser Antilles. The genus is closely related to the Cocos, or coconut genus, and many Syagrus species produce edible seeds similar to the coconut.
Licuala is a genus of palms, in the tribe Trachycarpeae, commonly found in tropical forests of southern China, Southeast Asia, the Himalayas, New Guinea and the western Pacific Ocean islands.
Calyptrogyne is a genus in the palm family (Arecaceae). The distribution of this genus is 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.
Brahea is a genus of palms in the family Arecaceae. They are commonly referred to as hesper palms and are endemic to Mexico and Central America. All Hesper Palms have large, fan-shaped leaves. The generic name honours Danish astronomer Tycho Brahe (1546-1601).
Colpothrinax is a genus of palms native to Central America and the Caribbean. Colpothrinax is a member of subfamily Coryphoideae, tribe Trachycarpeae, although its placement within the subtribe is uncertain, on the basis of plastid DNA
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.
Archontophoenix is a plant genus comprising six palm species that are native to New South Wales and Queensland in eastern Australia. They are tall, slender and unbranched. Relationships between Archontophoenix and the other genera of subtribe Archontophoenicinae, including the New Caledonia endemic Actinokentia, Chambeyronia and Kentiopsis are unresolved.
Asterogyne is a genus of flowering plant in the family Arecaceae native to Central America and northern South America, with three of the five known species endemic to Venezuela.
Cryosophila is a genus of medium-sized fan palms that range from central Mexico to northern Colombia. Species in the genus can be readily distinguished from related genera by their distinctive downward-pointing spines on the stem, which are actually modified roots. They are known as the "root spine palms".
Schippia concolor, the mountain pimento or silver pimeto, is a medium-sized palm species that is native to Belize and Guatemala. Named for its discoverer, Australian botanist William A. Schipp, the species is threatened by habitat loss. It is the sole species in the genus Schippia.
Wettinia is a palm genus, consisting of flowering plants in the family Arecaceae. The genus, established in 1837, contains some 20 species, but more seem to await discovery considering that 4 species - W. aequatorialis, W. lanata, W. minima and W. panamensis - were described as late as 1995. The genus is broadly divided into two groups. One group has the fruits tightly packed, while the other, formerly classified as genus Catoblastus, has fruits scattered along the inflorescence branches. It is not known whether these groups are both monophyletic. The genus is named after Frederick Augustus II of Saxony, of the House of Wettin.
Euterpe precatoria is a tall, slender-stemmed, pinnate-leaved palm native to Central and South America and Trinidad and Tobago. E. precatoria is used commercially to produce fruits, although Euterpe oleracea is more commonly cultivated due to its larger fruits.
Pholidostachys is a genus of palms found in Central America and northwestern South America.
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.