Allagoptera

Allagoptera is a monoecious genus of flowering plant in the palm family found in South America consisting of 5 accepted species. Compared to other genera within the Cocoseae Allagoptera is described as particularly specialized.[3] The genus name is a Greek combination of "change" and "feather", describing the full leaf; it was formerly named Diplothemium.

Allagoptera
Allagoptera arenaria
Scientific classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Monocots
Clade: Commelinids
Order: Arecales
Family: Arecaceae
Tribe: Cocoseae
Genus: Allagoptera
Nees[1]
Species
Synonyms[2]
  • Diplothemium Mart.
  • Diplothenium Voigt
  • Polyandrococos Barb.Rodr.

Description

Allagoptera produces very short or acaulescent trunks and in cases where the trunk grows erect it often makes a downward turn leaving the crown below the trunk-base. The trunks in Allagoptera are among the few in the palm family which tend to bifurcate, producing multiple heads per unit. The pinnate leaves are gently arching to 2 m and are carried on long, slender petioles which are adaxially channeled. The single-fold leaflets are regularly or irregularly arranged on the rachis each protruding into a different plane, creating a plumose leaf. The unusual spicate inflorescence emerges from within the leaf-crown carrying the pistilate flowers basally with the staminate flowers growing distally. The single-seeded fruit is yellow to brown, growing in crowded clusters.[4]

Distribution and habitat

Palms in this genus are found in Brazil, Paraguay, Bolivia, and Argentina growing in a variety of habitats. Some thrive in sandy beaches and dunes, while others are found in woodlands; Allagoptera species are also common along sandstone hills and in the Cerrado vegetation.

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gollark: In politics this might manifest as "taxation is theft (because I don't particularly want to give the government money but they take it anyway)", or "work is slavery (because you are heavily incentivized to do some amount of work or you struggle to afford things)".
gollark: The issue is that a "book" isn't a strict formal thing but a pointer to a rough fuzzy set of things which we call "books" for convenience.
gollark: For example, if I said "this eBook is a book because it's a long-form piece of verbal content", I could then use the noncentral fallacy to go "so it's made of paper and has text printed onto physical pages".

References
  1. C.D.G. Nees in Wied-Neuwied, Reis nach Brasilien 2:335. 1821. Type:A. pumila (=A. arenaria (Gomes)) Diplothemium Martius, Palmarum Familia 20. 1824.
  2. "Allagoptera". Plants of the World Online. Royal Botanic Gardens, Kew. 2019. Retrieved 17 July 2019.
  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. 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
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