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Wollemia nobilis

(Wollemi Pine)

Overview

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Critically Endangered

Threat status

Interesting Facts

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Common Names

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Common Names in English:

Wollemi Pine

Description

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Family Araucariaceae

Trees evergreen , dioecious or monoecious, with relatively large pith in trunk and resin in cortex. Leaves spirally arranged or decussate, sessile, decurrent. Cones unisexual . Pollen cones axillary or terminal on branchlets , solitary or clustered; microsporophylls numerous , spirally arranged, sessile; microsporangia 4-20, external, suspended, arranged in 2 rows , filiform ; pollen sacs split longitudinally; pollen nonsaccate. Seed cones solitary, terminal on branchlets, maturing in 2nd or 3rd year; bracts numerous, spirally arranged; ovulate scales degenerate or ligulate , connate with bracts on 1 side, each with 1 ovule at base abaxially; ovules connate with ovulate scales or with bracts (when ovulate scales degenerate) ; bracts of mature cones deciduous, flattened, woody or thickly leathery, bearing 1 seed in basal part (if developed), sometimes adnate with ligulate seed scales in center of adaxial surface, apex triangular or caudate . Seeds connate with bracts or detached, flattened, winged or not. 2n = 26.

Three genera and 41 species: Indonesia, Malaysia, Papua New Guinea, Philippines; Australia, New Zealand, SW Pacific Islands, South America; two genera and four species (all introduced ) in China.[1]

Physical Description

Habit: Evergreen .

Flowers: Bloom Period: n/a • Flower Color: green

Size/Age/Growth

Size: over 40' tall.

Habitat

Ecology: All stands occur in deep narrow sandstone gorges in warm temperate rainforest of Ceratopetalum apetalum, Doryphora sassafras and Acmena smithii, with an understorey comprising several fern species such as Dicksonia antarctica, Cyathea australis, Sticherus flabellatus, Adiantum diaphanum, Doodia aspera and Blechnum nudum. Most individuals are located on ledges or grow from cliffs within the gorges. Eucalypt woodland dominated by Eucalyptus piperita surrounds these gorges (Benson and Allen 2007). (Ref. 313640).

List of Habitats :

Biology

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Growth

Culture: Space 12-15' apart.

Soil: Minimum pH: 4.5 • Maximum pH: 6.5

Sunlight: Sun Exposure: Full Sun .

Temperature: Cold Hardiness: 7a, 7b, 8a, 8b, 9a, 9b, 10a, 10b, 11. (map)

Taxonomy

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Notes

Name Status: Accepted Name .

Comment: Conservation status: CR (D), Habit: Tree

Last scrutiny: 5-Jun-2008

The genus Wollemia was first described in 1995 following the discovery of a small group of conifers in a remote gorge in Wollemi National Park in 1994. To date only one species is known - Wollemia nobilis. The pollen from Wollemia is virtually indistinguishable from the fossil pollen assigned to the fossil genus Dilwynites which has a fossil record that dates back to the Turonian stage of the Cretaceous period, some 90 million years ago (Dettmann and Clifford 2005). This indicates that the genus, rather than the extant species, has a very long fossil record.[2].

Similar Species

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Members of the genus Wollemia

ZipcodeZoo has pages for 1 species, subspecies, varieties, forms, and cultivars in this genus:

W. nobilis (Wollemi Pine)

More Info

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Further Reading

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Notes

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Contributors

Data Sources

Accessed through GBIF Data Portal February 28, 2008:

Identifiers

Footnotes

  1. Liguo Fu, Nan Li & Robert R. Mill "Araucariaceae". in Flora of China Vol. 4 Page 9. Published by Science Press (Beijing) and Missouri Botanical Garden Press. Online at EFloras.org. [back]
  2. Thomas, P. 2011. Wollemia nobilis. In: IUCN 2011. IUCN Red List of Threatened Species. Version 2011.2. <www.iucnredlist.org>. Downloaded on 05 February 2012. [back]
Last Revised: 7/15/2012