Pseudophoenix
| Pseudophoenix | ||||||||||||
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| Scientific name of the tribe | ||||||||||||
| Cyclospatheae | ||||||||||||
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| Scientific name of the genus | ||||||||||||
| Pseudophoenix | ||||||||||||
| H. Wendl. ex coffin. |
Pseudophoenix is a genus of palm trees and occurs only in the Caribbean . It is the only genus of the tribe Cyclospatheae .
features
As the only genus of the subfamily, the representatives of Pseudophoenix have hermaphrodite flowers. The palms form medium-sized, upright trunks, the trunk is often bottle-shaped. The leaf scars on the trunk are rather large apart. The leaf sheaths are Roehrig and form a crown shaft. The leaf blades are pinnate. A palm tree has relatively few leaves, usually around 10.
The inflorescences appear between the leaves and are pendulous to arched. The hermaphroditic flowers are spiraling in the axilla of small bracts . The ovary is triple with one ovule each . The fruits are lobed when more than one seed develops.
The chromosome number is 2n = 34.
Distribution and locations
The genus is restricted to the more northerly islands of the Caribbean and the adjacent North American mainland. It occurs in Florida , the Bahamas , Cuba , Hispaniola and Dominica as well as in Mexico and Belize . The representatives grow on well-drained sand or sandstone soils near the coast or inland on dry hills. The seeds are very long-lived for palm trees and can still germinate after two years. Dry fruits are buoyant.
Systematics
Pseudophoenix H. Wendl. ex coffin. forms alone the tribe Cyclospatheae within the subfamily Ceroxyloideae . The genus is monophyletic . Her sister group is the group from Ceroxyleae and Phytelepheae .
In the World Checklist of Selected Plant Families of the Royal Botanic Gardens, Kew , the following types are recognized:
- Pseudophoenix ekmanii Burret : The home is the Dominican Republic.
- Pseudophoenix lediniana Read : The home is southwest Haiti.
- Pseudophoenix sargentii H. Wendl. ex coffin. : The range extends from Florida to the Caribbean and from southeastern Mexico to Belize .
- Pseudophoenix vinifera (Mart.) Becc. : The home is Haiti and the Dominican Republic.
supporting documents
- John Dransfield, Natalie W. Uhl, Conny B. Asmussen, William J. Baker, Madeline M. Harley, Carl E. Lewis: Genera Palmarum. The Evolution and Classification of Palms . Second edition, Royal Botanic Gardens, Kew 2008, ISBN 978-1-84246-182-2 , pp. 333-336.
Individual evidence
- ↑ a b c d e Rafaël Govaerts (Ed.): Pseudophoenix. In: World Checklist of Selected Plant Families (WCSP) - The Board of Trustees of the Royal Botanic Gardens, Kew . Retrieved August 4, 2018.
Web links
- Pseudophoenix on the homepage of the Fairchild Tropical Botanic Garden