Ammandra

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Ammandra
Ammandra decasperma imported from iNaturalist photo 72642350 on 12 November 2023.jpg
Scientific classification OOjs UI icon edit-ltr.svg
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Monocots
Clade: Commelinids
Order: Arecales
Family: Arecaceae
Subfamily: Ceroxyloideae
Tribe: Phytelepheae
Genus: Ammandra
O.F.Cook
Species:
A. decasperma
Binomial name
Ammandra decasperma
Synonyms [2]
  • Phytelephas decasperma(O.F.Cook) Dahlgren
  • Phytelephas dasyneuraBurret
  • Ammandra dasyneura(Burret) Barfod

Ammandra is a monotypic genus of flowering plants in the palm family found in Colombia and Ecuador, [2] where it is endangered. The sole species is Ammandra decasperma, although another species name has been proposed. It is a pinnate-leaved, dioecious palm whose seeds and petioles are used in button and basket making, respectively. It is commonly called ivory palm or cabecita.

Contents

Description

Ammandra decasperma grows in multi-headed clusters, the trunks usually remaining underground or prostrate upon it. Despite the negligible trunk size, the leaves reach over 6 m long, slightly arching, on 2 m petioles. The linear leaflets are dark green, 60–90 cm long, and emerge from the rachis in the same plane. In male plants, the inflorescence is a long spike covered in short branches of white to yellow flowers, the female's being much shorter and more compact. The round fruit grows in clusters of 3-6 and is covered in pointed warts, each fruit containing six or more kidney shaped seeds. [3]

Taxonomy

The type species described by Cook was Ammandra decasperma; a similar population was found being geographically separated and with minor flower differences and was designated A. dasyneura (Burret). In 2001, Bernal et al. published the discovery of an Ammandra population located between the other two with floral characteristics represented in both groups. They, and other taxonomists since, concluded that the three populations were of a single species (see distribution map). [4]

Separately, the only species in the closely related genus '' Aphandra , Aphandra natalia, was initially described as Ammandra natalia but was later given its own genus.

The genus name translates from Greek to "sand man", because "The stamens are minute and have the appearance of small grains of sand scattered over the surface of the receptacles", [5] and the species epithet derives from two Latin words meaning "ten" and "seed", describing the maximum number of seeds per fruit.

Distribution and habitat

These palms grow in the foothills of the Andes mountains, along Colombia's west coast as well as inland Ecuador up to 450 m in elevation. In either case, they are an understory plant usually receiving only filtered light and nearly year-round rainfall.

Cultivation and uses

Ammandra is not common in cultivation outside its natural range but when grown, it requires wet and warm conditions resembling the rain forest and will not tolerate full sun when young. It also prefers free-draining, highly organic soil. In Colombia, their large, strong petioles are commonly woven into baskets and other thatched goods, while the large white seeds, commonly called "vegetable ivory", are carved into buttons and trinkets. [4]

Related Research Articles

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<i>Aphandra</i> Genus of palms

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<i>Allagoptera</i> Genus of palms

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Barcella is a monotypic genus of flowering plant in the palm family found in the States of Amazonas and Roraima in northwestern Brazil. The only known species is Barcella odora which is used by the Brazilian peoples in construction and for various thatched goods.

<i>Calyptrocalyx</i> Genus of palms

Calyptrocalyx is a monoecious genus of flowering plant in the palm family found in Papua New Guinea and the nearby Maluku Islands. Ranging from small to large, the palms in this genus are increasingly found in cultivation owing largely to their purple, red, and orange colored, new foliage. At least 26 species have been described while others, known only by local names, have not yet received a taxonomic account. Palms formerly classified within Paralinospadix have been incorporated into this genus. It is named from 2 Greek words meaning 'covered' and 'calyx'.

<i>Actinorhytis</i> Genus of palms

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<i>Dictyocaryum</i> Genus of palms

Dictyocaryum is a monoecious genus of flowering plant in the palm family found in South America. It is closely related to the genus Iriartea; they are commonly called araque or palma real. As many as eleven species have been described but this number is reduced to three in most current accounts. The genus name translates from two Greek words meaning "net" and "nut", describing the thick network of raphe fibers around the seed.

<i>Eleiodoxa</i> Genus of palms

Eleiodoxa is a monotypic genus of flowering plant in the palm family found in Southeast Asia. The only species, Eleiodoxa conferta, is a dioecious, swamp-dwelling plant, commonly called by Malay as asam kelubi or asam paya. While five species names have been published, the other four are usually recognized as synonyms of the lectotype E. conferta. The genus is named from two Greek words meaning "water" and "glory" and the species name is Latin for "congested", an allusion to the flower spike.

Eremospatha is a genus of climbing flowering plants in the palm family found in tropical Africa. These rattans are uncommon in cultivation and poorly understood by taxonomists. Closely related to Laccosperma, they are differentiated by the near complete absence of bracts and bracteoles. The name is from Greek meaning "without a spathe".

<i>Eugeissona</i> Genus of palms from Southeast Asia

Eugeissona is a clustering genus of flowering plant in the palm family native to Borneo, Thailand and Malaysia. The six monoecious species provide a wide range of local uses and are commonly called bertam or wild Bornean sago. The genus is the sole representative of the Eugeissoninae having very few obvious relatives; the hermaphrodite and staminate flowers are also found in Metroxylon, however the other specialized characteristics are unique suggesting an early split and differentiation from other members of the Calameae. Fossilized pollen belonging to these plants has been recovered in the lower and middle Miocene deposits in Sarawak. The name is from two Greek words meaning "good" and "roof", due to their common use in roof thatching.

<i>Laccospadix</i> Genus of palms

Laccospadix is a monotypic plant genus in the palm family which is endemic to Queensland, Australia. The sole described species is Laccospadix australasicus, commonly called Atherton palm or Queensland kentia. The two Greek words from which it is named translate to "reservoir" and "spadix".

<i>Laccosperma</i> Genus of palms from Africa

Laccosperma is a clustering genus of flowering plant in the family palm found in tropical Africa. Poorly studied and rarely cultivated, they are closely related to the genus Eremospatha and with it form a tribe in the Calameae characterized by dyads of hermaphrodite flowers. The genus name combines the Greek words for "reservoir" and "seed".

<i>Leopoldinia</i> Genus of palms

Leopoldinia is a mostly monoecious genus of flowering plant in the palm family from northern South America, where they are known as jará palm or pissava palm. The two known species are commercially important, especially L. piassaba, which yields sustenance and construction material. The genus is named for Maria Leopoldina, archduchess of Austria, and Brazilian empress.

<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>Lepidorrhachis</i> Genus of flowering plants

Lepidorrhachis is a monotypic genus of flowering plant in the palm family restricted to Lord Howe Island. The genus name for the single, monoecious species, Lepidorrhachis mooreana, comes from two Greek word meaning "scale" and "rachis", and the epithet honors Charles Moore, first director of the Sydney Botanical Gardens. The common name is Little Mountain Palm.

<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.

Nenga is a monoecious genus of flowering plant in the palm family. It is native to Southeast Asia and commonly called pinang palm. N. gajah is the aberration in the genus with its short internodes, marcescent leaves and interfoliar inflorescence, a combination of traits seen in a few species of the closely related Pinanga and Areca palms. The genus name is based on a corruption of a Javanese term for a plant now classified within Pinanga.

Oncocalamus is a monoecious genus of flowering plants in the palm family found in western Africa. The genus is the lone member of the Oncocalaminae; once placed with the vegetatively similar Eremospatha and Laccosperma in the Ancistrophyllinae, it is now isolated based on their unusual flowers and arrangement. Such a placement argues for a long and complex evolutionary process in the Calamoideae with heavy extinction rates. The Greek genus name combines "horn" and "capsule".

<i>Synechanthus</i> Genus of palms

Synechanthus is a monoecious genus of flowering plant in the palm family found in Mexico, Central and South America. Commonly called bola, palmilla, or jelly bean palm, they are closely related to members of Chamaedorea, only distinguished by their flower and fruit form. The Greek genus name is a combination of "united" and "flower".

<i>Phytelephas macrocarpa</i> Species of palm

Phytelephas macrocarpa is a single-stemmed, unarmed, reclining or erect palm from the extreme northern coastal regions of South America, growing to some 12 m tall. It has been introduced and cultivated in tropical regions all over the world. The trunk is about 30 cm across, with prominent leaf scars. The crown is made up of about 30 plume-like leaves or fronds, each about 8 m long, dead leaves being persistent. It is one of some 7 species of palm in the genus Phytelephas, all of which have been exploited for vegetable ivory or tagua from the seed or corozo nut. The closely related Ammandra decasperma from Colombia, and Aphandra natalia from Ecuador, are also sources of vegetable ivory, but of inferior quality and therefore not commercially significant. 'Phytelephas macrocarpa' translates to ‘elephant plant’ with 'large fruit', the endosperm of the nut having the texture of elephant ivory, and consisting of large, thick-walled cells of two long-chain polysaccharides, mannan A and B.

References

  1. O.F. Cook, Journal of the Washington Academy of Sciences 17:220. 1927. Type:A. decasperma
  2. 1 2 Kew World Checklist of Selected Plant Families
  3. Uhl, Natalie W. and Dransfield, John (1987) Genera Palmarum - A classification of palms based on the work of Harold E. Moore. Lawrence, Kansas: Allen Press. ISBN   0-935868-30-5 / ISBN   978-0-935868-30-2
  4. 1 2 Riffle, Robert L. and Craft, Paul (2003) An Encyclopedia of Cultivated Palms. Portland: Timber Press. ISBN   0-88192-558-6 / ISBN   978-0-88192-558-6 (Page 250)
  5. Cook, O.F. (1927) New Genera and Species of Ivory Palms from Colombia Ecuador and Peru. in Journal of the Washington Academy of Sciences. vol 27. p. 218