Phytelephas

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Phytelephas

Fruiting tagua palm (unknown species)
Scientific classification
Kingdom: Plantae
(unranked): Angiosperms
(unranked): Monocots
(unranked): Commelinids
Order: Arecales[verification needed]
Family: Arecaceae
Subfamily: Ceroxyloideae
Tribe: Phytelephanteae
Genus: Phytelephas
Ruiz & Pav.
Species

6, see text

Synonyms

[1] Elephantusia Willd.
Palandra O.F.Cook
Yarina O.F.Cook

Phytelephas is a genus containing six species of palms (family Arecaceae), occurring from southern Panama along the Andes to Ecuador , Bolivia and Peru. They are commonly known as ivory palms, ivory-nut palms or tagua palms; their scientific name means "plant elephant". This and the first two of the common names refer to the very hard white endosperm of their seeds (tagua nuts), which resembles elephant ivory.

They are medium-sized to tall palms reaching up to 20 m tall, with pinnate leaves. In its original state, the "nut" is covered with pericarp, which gets removed by various animals. The kernel is covered with a brown, flaky skin and shaped like a small avocado, roughly 4-8 cm in diameter.

[edit] Uses

Silver locket with tagua center

Given trade restrictions in elephant ivory as well as animal welfare concerns, ivory palm endosperm is often used as a substitute for elephant ivory today, and traded as vegetable ivory, palm ivory, corozo or tagua. When dried out, it can be carved just like elephant ivory; it is often used for beads, buttons, figurines and jewelry, and can be dyed. More recently, palm ivory has been used in the production of bagpipes. Vegetable ivory furthers important environmental and socioeconomic goals by stimulating the local economies and microenterprises in South America, provides an alternative to cutting down rainforests for farming, and prevents elephants from being killed for the ivory in their tusks.

In Ecuador, the Ecuadorean Ivory Palm (P. aequatorialis) is the species whose kernels are widely harvested. The Large-fruited Ivory Palm (P. macrocarpa) is the ivory palm native to Brazil, and most internationally-traded palm ivory is derived from this species. The Colombian Ivory Palm (P. schottii) and P. tenuicaulis, both formerly included in P. macrocarpa, are the usual source of the product in Colombia. The other two species are quite rare and have a restricted range; they are not used for tagua production on a significant scale.

Tagua carvings

The kernels are typically simply picked up from the ground after the ripe fruit has detached from the tree and forest animals have taken care of the pericarp, or harvested when ripe and the pericarp manually removed. When buying them, one cannot see inside them and, in some countries such as Australia, the sliced nuts are not an issue[clarification needed].

In their native range, these palms are also used as a source of food and construction wood.

[edit] List of species

As of 2004, the following species were considered valid:[1]

[edit] Footnotes

  1. ^ a b Govaerts et al. (2004)

[edit] References

  • Govaerts, R.; Dransfield, J.; Zona, S.; Hodel, D.R. & Henderson, A. (2004): World Checklist of Arecaceae – Phytelephas. The Board of Trustees of the Royal Botanic Gardens, Kew. Retrieved 2008-DEC-24.

[edit] External links

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