''Araucaria cunninghamii'' is a species of '' Araucaria'' known as hoop pine. Other less commonly used names include colonial pine, Queensland pine, Dorrigo pine, Moreton Bay pine and Richmond River pine. The scientific name honours the botanist and

explorer Exploration refers to the historical practice of discovering remote lands. It is studied by geographers and historians. Two major eras of exploration occurred in human history: one of convergence, and one of divergence. The first, covering most ...

Allan Cunningham, who collected the first specimens in the 1820s.

Habitat

The species is found in the dry rainforests of

New South Wales ) , nickname = , image_map = New South Wales in Australia.svg , map_caption = Location of New South Wales in AustraliaCoordinates: , subdivision_type = Country , subdivision_name = Australia , established_title = Before federation , es ...

and

Queensland ) , nickname = Sunshine State , image_map = Queensland in Australia.svg , map_caption = Location of Queensland in Australia , subdivision_type = Country , subdivision_name = Australia , established_title = Before federation , establishe ...

and in

New Guinea New Guinea (; Hiri Motu: ''Niu Gini''; id, Papua, or , historically ) is the world's second-largest island with an area of . Located in Oceania in the southwestern Pacific Ocean, the island is separated from Australia by the wide Torr ...

. The trees can live up to 450 years and grow to a height of 60 metres. The bark is rough, splits naturally, and peels easily.

Description

The leaves on young trees are awl-shaped, 1–2 cm long, about 2 mm thick at the base, and scale-like, incurved, 1–2 cm long and 4 mm broad on mature trees. The

cones A cone is a three-dimensional geometric shape that tapers smoothly from a flat base (frequently, though not necessarily, circular) to a point called the apex or vertex. A cone is formed by a set of line segments, half-lines, or lines conn ...

are ovoid, 8–10 cm long and 6–8 cm diameter, and take about 18 months to mature. They disintegrate at maturity to release the nut-like edible

seed A seed is an embryonic plant enclosed in a protective outer covering, along with a food reserve. The formation of the seed is a part of the process of reproduction in seed plants, the spermatophytes, including the gymnosperm and angiospe ...

Subspecies

There are two varieties: *''Araucaria cunninghamii'' var. ''cunninghamii'' – Australia, from northeast

to east-central

, at 0–1,000 m altitude. *''Araucaria cunninghamii'' var. ''papuana'' – New Guinea, on the mountains of

Papua New Guinea Papua New Guinea (abbreviated PNG; , ; tpi, Papua Niugini; ho, Papua Niu Gini), officially the Independent State of Papua New Guinea ( tpi, Independen Stet bilong Papua Niugini; ho, Independen Stet bilong Papua Niu Gini), is a country i ...

, and in

Irian Jaya New Guinea (; Hiri Motu: ''Niu Gini''; id, Papua, or , historically ) is the world's second-largest island with an area of . Located in Oceania in the southwestern Pacific Ocean, the island is separated from Australia by the wide Torres ...

Indonesia Indonesia, officially the Republic of Indonesia, is a country in Southeast Asia and Oceania between the Indian and Pacific oceans. It consists of over 17,000 islands, including Sumatra, Java, Sulawesi, and parts of Borneo and New Guine ...

, at 100–2,700 m altitude.

Cultivation and other uses

The

wood Wood is a porous and fibrous structural tissue found in the stems and roots of trees and other woody plants. It is an organic materiala natural composite of cellulose fibers that are strong in tension and embedded in a matrix of lignin ...

is a high-quality timber that is particularly important to the plywood industry and also used for furniture, veneer,

joiner A joiner is an artisan and tradesperson who builds things by joining pieces of wood, particularly lighter and more ornamental work than that done by a carpenter, including furniture and the "fittings" of a house, ship, etc. Joiners may work in ...

panelling Panelling (or paneling in the U.S.) is a millwork wall covering constructed from rigid or semi-rigid components. These are traditionally interlocking wood, but could be plastic or other materials. Panelling was developed in antiquity to make roo ...

particle board Particle board, also known as chipboard or low-density fiberboard, is an engineered wood product manufactured from wood chips and a synthetic resin or other suitable binder, which is pressed and extruded. Particle board is often confused with ...

flooring Flooring is the general term for a permanent covering of a floor, or for the work of installing such a floor covering. Floor covering is a term to generically describe any finish material applied over a floor structure to provide a walking surface ...

and

boat A boat is a watercraft of a large range of types and sizes, but generally smaller than a ship, which is distinguished by its larger size, shape, cargo or passenger capacity, or its ability to carry boats. Small boats are typically found on inl ...

s. Most natural stands in Australia and Papua New Guinea have been depleted by logging. It is now mainly found on timber

plantation A plantation is an agricultural estate, generally centered on a plantation house, meant for farming that specializes in cash crops, usually mainly planted with a single crop, with perhaps ancillary areas for vegetables for eating and so on. The ...

s; however, the species continues to thrive in protected areas, including

Lamington National Park The Lamington National Park is a national park, lying on the Lamington Plateau of the McPherson Range on the Queensland/New South Wales border in Australia. From Southport on the Gold Coast the park is to the southwest and Brisbane is north. ...

where at least one walking track is named after it.

Aboriginal Australians Aboriginal Australians are the various Indigenous peoples of the Australian mainland and many of its islands, such as Tasmania, Fraser Island, Hinchinbrook Island, the Tiwi Islands, and Groote Eylandt, but excluding the Torres Strait Isl ...

used the

resin In polymer chemistry and materials science, resin is a solid or highly viscous substance of plant or synthetic origin that is typically convertible into polymers. Resins are usually mixtures of organic compounds. This article focuses on n ...

as cement.

Pests

The plantations in Queensland have been subject to damage by a native rat species, '' Rattus tunneyi'', which digs to the roots of a semi-mature tree and kills it, the animal was declared a pest for this reason. The vulnerability of ''A. cunninghamii'' plantations to pest losses has caused some of them to be replaced by '' A. hunsteinii'' which suffers less in plantation. Unspecified

Microlepidoptera Microlepidoptera (micromoths) is an artificial (i.e., unranked and not monophyletic) grouping of moth families, commonly known as the 'smaller moths' (micro, Lepidoptera). These generally have wingspans of under 20 mm, and are thus harder to ...

are significant pests of the

pine cone A conifer cone (in formal botanical usage: strobilus, plural strobili) is a seed-bearing organ on gymnosperm plants. It is usually woody, ovoid to globular, including scales and bracts arranged around a central axis, especially in conifers an ...

s of both.

Biological control

'' Cryptolaemus montrouzieri'' is a coccinellid predator of mealybug and soft scale insect parasites of ''A. cunninghamii'', and has several characteristics that make it a good

biocontrol Biological control or biocontrol is a method of controlling pests, such as insects, mites, weeds, and plant diseases, using other organisms. It relies on predation, parasitism, herbivory, or other natural mechanisms, but typically also in ...

for use in plantations. Although they are less interested in other trees - by many multiples - ''C. montrouzieri'' does hunt the same pests in

custard apple Custard apple is a common name for a fruit and for the tree that bears it, '' Annona reticulata.'' The tree’s fruits vary in shape; they may be heart-shaped, spherical, oblong or irregular. Their size ranges from 7 to 12 cm (2.8 to 4.7 ...

and

citrus ''Citrus'' is a genus of flowering trees and shrubs in the rue family, Rutaceae. Plants in the genus produce citrus fruits, including important crops such as oranges, lemons, grapefruits, pomelos, and limes. The genus ''Citrus'' is native to ...

plantations.

Gallery

File:WilliamLawsonDr.jpg, Hoop Pine in

Prospect Reservoir The Prospect Reservoir is a heritage-listed potable water supply and storage reservoir created by the Prospect Dam, across the Prospect Creek located in the Western Sydney suburb of Prospect, in New South Wales, Australia. The eastern boun ...

in Sydney Image:Araucaria cunninghamii bark.JPG, The banded bark of ''Araucaria cunninghamii''

References

External links

Australian National Botanic Garden: ''Araucaria cunninghamii''Gymnosperm Database: ''Araucaria cunninghamii''Brisbane Rainforest Action & Information Network: ''Araucaria cunninghamii''
{{Taxonbar, from=Q1394414 cunninghamii Trees of Australia Trees of New Guinea Flora of Queensland Flora of New South Wales Pinales of Australia Australian Aboriginal bushcraft