Agathis atropurpurea
Agathis atropurpurea is a plant of the family (Araucariaceae ). It is located in northeastern Queensland (Australia) at home.
Description
Agathis atropurpurea grows as a evergreen tree that can reach heights of growth of up to 50 meters. The smooth to rough scaly Stammborke is reddish colored violet to purple brown and purple-black to brown or gray-brown and sometimes has a blue-green tint on. The bark of young branches is sometimes blue-green.
The buds are spherically shaped with a length of about 1.5 millimeters. The leaves are linear, oval elliptic, oblong- elliptical shape with a length of 3 to 7 centimeters and a width of 0.5 to 2 centimeters to elliptical. You are at a 1 to 2 mm long petiole. The upper end of the leaves is notched dull and the lower leaf surface is colored blue-green.
The male cones are at a 2 to 3 millimeters long stem and are at a length from 0.9 to 1.6 centimeters and a thickness of 0.4 to 0.75 centimeters cylindrically shaped. They contain two to five Mikrosporophylle with two to five pollen sacs. The spherical, female cones are 3.5 to 5.5 inches long and as thick. They consist of 100 to 150 cone scales and maturity towards olive green colored to blue-green. The light brown seeds are up to 1.2 inches long and have two cinnamon-brown wings, the longer wing is wide up to 1.5 centimeters.
Occurrence and risk
The natural range of Agathis atropurpurea includes only those located in the northeastern Queensland Bellenden Ker Range.
The species grows in subalpine rain forests at altitudes 700-1600 m. Annual precipitation, depending on location between 2000 and 3000 mm. There Agathis atropurpurea grows often together with other tree species such as Balanops australiana, Ceratopetalum succirubrum, Ceratopetalum virchowii, Doryphora aromatica, Elaeocarpus ferruginiflorus, Flindersia bourjotiana, Syzygium cryptophlebia, Sundacarpus amarus and Xanthostemon pubescens.
Agathis atropurpurea is classified as "low risk" in the IUCN Red List. In the past, especially wood felling played an important role. In some parts of the range, there was a population decline, which may be due to an infection with the fungus Phytophthora cinnamomi. The total stock of Agathis atropurpurea is considered stable.
System
Agathis atropurpurea is allocated within the genus of kauri trees ( Agathis ) of section Agathis.
The first description as Agathis atropurpurea was made in 1978 by Bernard Hyland in Brunonia, Volume 1, No. 1, page 109
Swell
- Christopher J. Earle: Agathis atropurpurea. In: The Gymnosperm Database. www.conifers.org, November 23, 2012, accessed on 24 December 2013 ( English).
- Agathis atropurpurea. In: Flora of Australia Online. www.anbg.gov.au, accessed on 24 December 2013 ( English).