Araucaria columnaris

Araucaria columnaris

Araucaria columnaris is a plant of the genus Araucaria (Araucaria ). She comes to the south and west of New Caledonia endemic.

Description

Araucaria columnaris growing as evergreen tree that can reach heights of growth of up to 60 meters. The crown is shaped more or less conical. The gray, papery bark peels off in thin strips. The trunk is in the lower part unbeastet first and, with increasing age of short branches. The branches have a diameter from 0.9 to 1 centimeter.

In young specimens the leaves are needle-like and have a incurved tip. They are lanceolate at a length of 4 to 7 millimeters and a width of 2 to 3 millimeters. On older trees scale-like leaves with a length of 5 to 7 mm and a width of 3 to 5 millimeters are the overlapping like roof tiles, acute or obtuse triangular with a curved- top and an indistinct midrib.

The male cones are oval to cylindrical in shape, with a length of 5 to 10 centimeters and a diameter of 1.5 to 2.2 centimeters. They contain top Mikrosporophylle with ten pollen sacs. The female pins have a length of 10 to 15 centimeters and a diameter of 7 to 11 centimeters. You are at a around 7 millimeters long stem. The at a length of 3 to 3.5 inches ovoid seeds has a broad rounded wings.

Occurrence

The natural range of Araucaria columnaris is located in the coastal areas of New Caledonia. One finds this kind in the southern province of Grande Terre, on the Isle of Pines and the Loyalty Islands. It is also often planted in other coastal regions of New Caledonia.

Araucaria columnaris thrives at altitudes between 0 and 50 meters. They settled mostly dense, moist evergreen forests. It is the only Araucaria species in New Caledonia, which also grows on calcareous soils. On the Isle of Pines it also occurs on soils that develop on coral.

Use

Araucaria columnaris is occasionally planted as an ornamental tree.

System

Araucaria columnaris belongs to the section Eutacta within the genus Araucaria (Araucaria ). The first description Araucaria columnaris as was done in 1852 by William Jackson Hooker in the Botanical Magazine 78 synonyms for Araucaria columnaris Hook. include Araucaria cookii R.Br. Araucaria excelsa and ( Lamb. ) R.Br..

Endangering

Araucaria columnaris is " not threatened " on the Red List of IUCN. Since the majority of stocks in coastal areas occurs, the mine construction no danger dar.

Swell

• Template: Internet resource / maintenance / access date not in ISO format Christopher J. Earle: Araucaria columnaris. In: The Gymnosperm Database. www.conifers.org, accessed 2 June 2011 (English).