Lepidocaryeae
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| Mart. ex Dumort. |
The Lepidocaryeae are a tribe of the palm family (Arecaceae).
features
The representatives of the Lepidocaryeae are tree-shaped or trunkless or climbing palms. They are diocesan , monocial or hermaphroditic, they can bloom multiple times or only once. The leaves are pinnate or fan-shaped. The palms are armed with spines or they are unreinforced. The inflorescences usually have bracts standing in two rows (distich) . The scars are pyramidal.
distribution
The representatives occur in the tropical region of Central and South America as well as from West Africa to Madagascar.
Systematics
The tribe Lepidocaryeae is placed within the palm family in the subfamily Calamoideae . The tribes as defined by Dransfield et al. (2008) are identified as natural relatives ( Monophylum ) in most studies . Their sister group are the Calameae .
Seven genera in three sub-tribes are counted to the tribe:
Subtribe Ancistrophyllinae
The representatives are climbing, hermaphrodite or monoecious palms. They can bloom once or several times. The leaves are pinnate, armed and have cirri with recurved acanthophylls . While the genera are quite similar vegetatively, they show a considerable variety in the inflorescences. They grow in the African tropics.
Subtribe Raphiinae
The representatives are trunkless or tree-shaped, monoecious, once-flowering palms. The leaves are pinnate, the petiole and rachis are unarmed. On the inflorescences the rachillae have female flowers at the bottom and male flowers at the ends. The species occur in the African tropics, one species in South America.
Subtribe Mauritiinae
The representatives are tree-shaped, diocesan, multiple-flowering palms. The leaves are fan-shaped and unarmed. The pollen grains are spherical with intectate protrusions. The seed is small and has a button-like appendix at the top.
The relationship between the sub-tribes is as follows:
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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. 146ff.
