Ceroxyleae
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The Ceroxyleae are a tribe of the palm family (Arecaceae).
features
The four genera of the tribe are morphologically very similar. The trunks are often very tall. The palms are diocesan . The leaf sheaths do not form a crown shaft. They tear open, their edges are fibrous. The inflorescences have several large bracts on the peduncle. These are densely hairy. The flowers are always unisexual. The male and female flowers are hardly different and are mostly petiolate. The flowers stand individually in the axils of small bracts and are arranged on the axis spirally or almost in two lines (subdistich). The male flowers have a maximum of 20 stamens . The ovary is dreifächrig with one ovule . The fruit has a smooth exocarp .
Systematics and distribution
The Ceroxyleae are assigned to the subfamily Ceroxyloideae within the Arecaceae family . The tribes as defined by Dransfield et al. (2008) is a natural kin group ( Monophylum ). Her sister group are the Phytelepheae .
The representatives are widespread in the southern hemisphere, with the individual genera populating separate areas:
- Ceroxylon in the Andes
- Juania in the Juan Fernández Islands
- Oraniopsis in Queensland , Australia
- Ravenea in Madagascar
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 . 2nd edition, Royal Botanic Gardens, Kew 2008, ISBN 978-1-84246-182-2 , pp. 333, 345f.