Araucaria laubenfelsii

Branch with needles

Araucaria laubenfelsii is a plant of the genus Araucaria (Araucaria ). It is an endemic species of the southern part of the island belonging to New Caledonia Grande Terre.

Description

Araucaria laubenfelsii grows as columnar, evergreen tree that can reach heights of growth of 10 to 50 meters. The gray bark flakes off in irregular shaped flakes or in thin strips. The twisted branches are dense and are 1.8 to 2.8 inches thick.

In young specimens the leaves are scale-like and have a incurved tip. They reach a length of 10-15 millimeters. On older trees are like roof tiles overlapping, scale-like leaves with a length of 12 to 20 millimeters and a width of 8 to 10 millimeters triangular with a pointed or curved- top and a distinct midrib.

The male cones are cylindrically shaped with a length of 12 to 15 centimeters and a diameter of 2.2 to 2.8 centimeters. They contain triangular Mikrosporophylle with twelve pollen sacs. The spherical female pins have a length of 10 to 12 inches and a diameter of 8 to 9 cm. The seed is about 3 inches tall and has a rounded wings. The seedlings form of four cotyledons ( cotyledons ).

Occurrence

The natural range of Araucaria laubenfelsii located south of the island belonging to New Caledonia Grande Terre. She comes there in front of Mont Dzumac, Mount Dou, Mount Kaala, Mount Mou, Mount of Sources and the surrounding area of ​​Canala.

Araucaria laubenfelsii thrives at altitudes 400-1400 m. They inhabited mountain slopes and peaks. The species grows on soils that develop on ultramafic rocks. They are found mainly in thickets, and in the higher altitude rainforests. In some locations, mixed stands with Araucaria Araucaria montana and biramulata be formed.

System

Araucaria laubenfelsii belongs to the section Eutacta within the genus Araucaria (Araucaria ). The first description as Araucaria laubenfelsii was founded in 1968 by Michel Corbasson in Addisonia; colored illustrations and popular. . . 8, pp. 467

Threats and conservation

Araucaria laubenfelsii is listed in the IUCN Red List as "low risk". The main hazard reason at Mount Kaala and the surrounding area of ​​the mine construction Canala and associated activities such as road construction and Abräumlager be called. In the more southern stocks mainly make forest fires a risk; Most of the southern stocks is in protected areas.

Swell

• Template: Internet resource / maintenance / access date not in ISO format Christopher J. Earle: Araucaria laubenfelsii. In: The Gymnosperm Database. www.conifers.org, accessed June 8, 2011 (English).