Allagoptera

Allagoptera
Allagoptera arenaria
Scientific classification
Kingdom:	Plantae
Clade:	Tracheophytes
Clade:	Angiosperms
Clade:	Monocots
Clade:	Commelinids
Order:	Arecales
Family:	Arecaceae
Subfamily:	Arecoideae
Tribe:	Cocoseae
Subtribe:	Attaleinae
Genus:	Allagoptera Nees [1]
Type species
Allagoptera arenaria Kuntze
Species
Allagoptera arenaria Allagoptera brevicalyx Allagoptera campestris Allagoptera caudescens Allagoptera leucocalyx
Synonyms [2]
DiplothemiumMart. DiplotheniumVoigt PolyandrococosBarb.Rodr.

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.

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]

Species

Image	Scientific name	Distribution
	Allagoptera arenaria	Atlantic Coast of Brazil
	Allagoptera brevicalyx	Bahia, Brazil
	Allagoptera campestris	Argentina, Brazil, Paraguay.
	Allagoptera caudescens	Brazil
	Allagoptera leucocalyx	Paraguay, Bolivia, Brazil, Argentina

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.

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

External links

• Media related to Allagoptera at Wikimedia Commons
• Data related to Allagoptera at Wikispecies
• Allagoptera on NPGS/GRIN
• Fairchild Guide to Palms