Juania

Juania australis is one of the Juan Fernandez Islands off the coast of Chile's native palm species. She is the only member of the genus Juania.

Features

Juania australis is similar to the related genera Ceroxylon and Oraniopsis, differs from them but by the following combination of characters: The cover sheet on the inflorescence is complete, the petals are free, the number of stamens is always six, the scar remains on the fruit are always eccentric and subapical.

There are dioecious, fiederblättrige palms. They are individually, are moderately large, non-reinforced and repeatedly flowering. The tribes have penetrated something, the leaf scars are oblique. The internodes are shorter from the mid- height in the crown area they are very short. Their surface is green and very smooth. The leaves are pinnate, the segments are folded reduplicat ( Λ - shaped). They are first vertically, and later they are from the side. The leaf sheaths are fibrous, rip open relative to the petiole and form no crown shaft.

The inflorescences are individually among the leaves, usually two per year formed. You are branched twice. The flowers are white and are available individually on the axles. The fruit is globose, to mature orange-red with smooth exocarp, a juicy and orange mesocarp. This has on the inside a few, shallow, longitudinal, straight, whitish fibers. The endocarp is very thin and cartilaginous, and is the seed of.

The chromosome number is unknown.

Dissemination and locations

Juania australis is endemic to the Juan Fernández Islands. It grows here on steep slopes and ridges of the lower and higher mountain forests at altitudes of 200 to 800 m, with a focus on 800 m. The species is endangered in their natural habitats by introduced goats. Since the species is difficult to cultivate, it is rare both in nature and in culture.

System

Juania is classified within the family in the subfamily Ceroxyloideae, Tribe Ceroxyleae. The genus is monotypic, it consists of a single type Juania australis. Their sister group is Ceroxylon.

In the World Checklist of Selected Plant Families of the Royal Botanic Gardens, Kew, just the way Juania australis is recognized.

The genus name is derived from the Juan Fernandez Islands, home of the genus, from.

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. 339-341.