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Agathis microstachya

Agathis microstachya
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Product Information
Specification

Scientific name: Agathis microstachya  J.F.Bailey & C.T.White  1916

Synonyms: -

Common names: Atherton kauri pine, Bull kauri, Bull pine

 

Description

Tree to 50 m tall, with smoothly cylindrical, unbuttressed trunk to 1.5(-2.8) m in diameter. Bark smooth and light brown at first, darkening, weathering grayish brown, and becoming coarsely scaly and roughened by persistent, relatively small flakes with age. Crown fairly open, cylindrical to broadly dome- or vase-shaped, with a few, heavy, upwardly arched limbs at the summit of the unbranched trunk and bearing open tufts of branchlets. Branchlets green from the beginning, relatively sparsely clothed with foliage. Leaves shiny bright to dark green above, paler beneath, (2-)4-7(-10) cm long (to 15 cm in juveniles), (0.5-)1.5-2.5(-3) cm wide (to 4 cm in juveniles), widest near or before the middle, tapering gradually and then more abruptly to the rounded or roundly triangular tip (narrowly triangular in juveniles) and more abruptly to the rounded or wedge-shaped base on a very short petiole 1-2 mm long. Pollen cones (1-)1.5-2 cm long, 6-10 mm thick, with four or five pairs of larger, clasping sterile scales at the base on a stalk (0-)1-3 mm long. Each pollen scale with two to five pollen sacs and a faceted external face. Seed cones with remnants of a waxy film at maturity, round but a little longer than wide, (7.5-)8.5-10(-11.5) cm long, 6.5-9(-10) cm thick. seed scales without a large, tonguelike projection. Seed body about 10 mm long and 5 mm wide, the larger wing about 25 mm by 15 mm, the smaller one bladelike, projecting about 8 mm.

Limited to a stretch of less than 100 km on the Atherton Tableland and vicinity southwest of Cairns, Queensland (Australia). Scattered as an emergent above the canopy of lowland rain forests on a variety of soil types; 400-900 m.

 

Conservation Status

Red List Category & Criteria: Near Threatened

(Before 1985 logging led to a significant impact reduction in the total population. Logging has ceased and the population has started to recover. Due to the extent of its recent exploitation, its sporadic distribution and limited extent of occurrence, continued monitoring is advisable to monitor its recovery. A precautionary assessment of Near Threatened seems appropriate)

 

References

Farjon, A. (2010). A Handbook of the World's Conifers. Koninklijke Brill, Leiden.

Eckenwalder, J.E. (2009) Conifers of the World: The Complete Reference. Timber Press, Portland.

IUCN Red List of Threatened Species, International Union for Conservation of Nature and Natural Resources. Cambridge, UK /Gland, Switzerland

 

Copyright © Aljos Farjon, James E. Eckenwalder, IUCN, Conifers Garden. All rights reserved.

Product CodeAGAOEL6W75


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