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Useful Tropical Plants

Pinus merkusii

Jungh. & de Vriese

Pinaceae


Pinus merkusii is treated here in the narrow sense, i.e. excluding populations in Indochina, which are assigned to Pinus latteri Mason.

+ Synonyms

Pinus finlaysoniana Wall.

Pinus merkiana Gordon

Pinus sumatrana Jungh.

Pinus ustulata (Businský) Businský

Common Name: Merkus Pine

Pinus merkusii
Trees growing in native habitat
Photograph by: pratensis
Creative Commons License
Pinus merkusii Pinus merkusii Pinus merkusii

General Information

Pinus merkusii is an evergreen, coniferous tree with heavy, horizontal or ascending branches[
303
Title
World Agroforesty Centre
Publication
 
Author
 
Website
http://www.worldagroforestry.org/
Publisher
 
Year
0
ISBN
 
Description
An excellent online database of a huge range of trees giving very good information on each plant - its uses, ecology, identity, propagation, pests etc.
]. Young trees have a pyramidal or conical crown form, whereas old trees have a flatter and spreading crown[
325
Title
Seed Leaflets
Publication
 
Author
Various
Website
http://en.sl.life.ku.dk/Publikationer/Udgivelser/PopulaerPublikationer.aspx?katid={D28373CC-6EF3-4EF8-B097-6D83FABF209E}&serieid={9F1C3DB1-6E7B-4CF1-AF53-F480B0CB40EF}&sort=title
Publisher
Forest & Landscape. Denmark
Year
0
ISBN
 
Description
A series of leaflets, jointly produced by the University of Copenhagen and the Royal Botanic Gardens at Kew, focussing on seed information for a number species, but also giving a lot of other information about each plant.
]. It can grow up to 50 metres tall with occasional specimens to 70 metres[
303
Title
World Agroforesty Centre
Publication
 
Author
 
Website
http://www.worldagroforestry.org/
Publisher
 
Year
0
ISBN
 
Description
An excellent online database of a huge range of trees giving very good information on each plant - its uses, ecology, identity, propagation, pests etc.
]. The straight and cylindrical bole can be free of branches for 15 - 25 metres, with an average diameter of 55cm, but with occasional specimens up to 140cm[
303
Title
World Agroforesty Centre
Publication
 
Author
 
Website
http://www.worldagroforestry.org/
Publisher
 
Year
0
ISBN
 
Description
An excellent online database of a huge range of trees giving very good information on each plant - its uses, ecology, identity, propagation, pests etc.
].
An important timber tree and supplier of resin, especially in Indonesia where it is often planted. It is widely harvested from the wild and is also often grown in plantations[
303
Title
World Agroforesty Centre
Publication
 
Author
 
Website
http://www.worldagroforestry.org/
Publisher
 
Year
0
ISBN
 
Description
An excellent online database of a huge range of trees giving very good information on each plant - its uses, ecology, identity, propagation, pests etc.
]. The tree also has a range of traditional medicinal uses.
Although the rate of decline past and present is unknown, continued exploitation of natural stands and deforestation in the Philippines and Indonesia are putting this species at risk. It is unknown to what extent natural stands are being replaced by pine plantations, if this occurs even with the same species it cannot substitute for natural pine forest. Subpopulations are severely fragmented and there is an ongoing decline due to deforestation and logging. The tree is classified as 'Vulnerable' in the IUCN Red List of Threatened Species(2013)[
338
Title
IUCN Red List of Threatened Species
Publication
 
Author
 
Website
http://www.iucnredlist.org/
Publisher
 
Year
0
ISBN
 
Description
A list of plants under threat and facing possible extinction, usually with brief details of the threats and information on habitat.
].

Known Hazards

The wood, sawdust and resins from various species of pine can cause dermatitis in sensitive people[
222
Title
A Field Guide to Medicinal Plants. Eastern and Central N. America.
Publication
 
Author
Foster. S. & Duke. J. A.
Publisher
Houghton Mifflin Co.
Year
1990
ISBN
0395467225
Description
A concise book dealing with almost 500 species. A line drawing of each plant is included plus colour photographs of about 100 species. Very good as a field guide, it only gives brief details about the plants medicinal properties.
].

Botanical References

598
Title
Trees of Laos and Vietnam - A Field Guide to 100 species.
Publication
 
Author
Hoang Van Sam; Khamseng Nanthavong; Kessler P.J.A.
Publisher
Blumea
Year
2004
ISBN
 
Description
A detailed guide, with excellent line-drawings, to 100 of the more important trees of Laos and Vietnam. A very good work, giving lots of information about each plant. Originally published in the journal Blumea, it is available as a PDF on the Interne

Range

E. Asia - Indonesia (northern Sumater), Philippines.

Habitat

Forming more or less open pine woods or pine savannahs influenced by periodic grass fires; at elevations from 300 - 1,300 metres[
338
Title
IUCN Red List of Threatened Species
Publication
 
Author
 
Website
http://www.iucnredlist.org/
Publisher
 
Year
0
ISBN
 
Description
A list of plants under threat and facing possible extinction, usually with brief details of the threats and information on habitat.
]. A pioneer species, it inhabits a wide range of forest and savannah habitats[
303
Title
World Agroforesty Centre
Publication
 
Author
 
Website
http://www.worldagroforestry.org/
Publisher
 
Year
0
ISBN
 
Description
An excellent online database of a huge range of trees giving very good information on each plant - its uses, ecology, identity, propagation, pests etc.
].

Properties

Conservation StatusVulnerable
Edibility Rating *
Medicinal Rating *  *
Other Uses Rating *  *  *
HabitEvergreen Tree
Height50.00 m
PollinatorsWind
Cultivation StatusCultivated, Wild

Cultivation Details

Pinus merkusii is a plant of the moist tropics, where it is found at elevations from sea level up to 1,300 metres[
303
Title
World Agroforesty Centre
Publication
 
Author
 
Website
http://www.worldagroforestry.org/
Publisher
 
Year
0
ISBN
 
Description
An excellent online database of a huge range of trees giving very good information on each plant - its uses, ecology, identity, propagation, pests etc.
]. It grows in areas where the mean annual rainfall is in the range 1,000 - 2,800mm, occasionally to 3,500mm, and the mean annual temperature is 21 - 28°c with a mean maximum temperature of the hottest month of 24 - 32°c and a mean minimum temperature of the coldest month of 18 - 24°c[
303
Title
World Agroforesty Centre
Publication
 
Author
 
Website
http://www.worldagroforestry.org/
Publisher
 
Year
0
ISBN
 
Description
An excellent online database of a huge range of trees giving very good information on each plant - its uses, ecology, identity, propagation, pests etc.
]. Pines grow naturally in South-East Asia only in strongly seasonal environments[
303
Title
World Agroforesty Centre
Publication
 
Author
 
Website
http://www.worldagroforestry.org/
Publisher
 
Year
0
ISBN
 
Description
An excellent online database of a huge range of trees giving very good information on each plant - its uses, ecology, identity, propagation, pests etc.
].
A strongly light-demanding species[
303
Title
World Agroforesty Centre
Publication
 
Author
 
Website
http://www.worldagroforestry.org/
Publisher
 
Year
0
ISBN
 
Description
An excellent online database of a huge range of trees giving very good information on each plant - its uses, ecology, identity, propagation, pests etc.
]. Tolerant of a wide range of soils, including dry sandy soils, gravely soils, red tropical loams (latosols), clay soils, alluvial soils and acid ultisols on sandstone which are often poorly drained[
325
Title
Seed Leaflets
Publication
 
Author
Various
Website
http://en.sl.life.ku.dk/Publikationer/Udgivelser/PopulaerPublikationer.aspx?katid={D28373CC-6EF3-4EF8-B097-6D83FABF209E}&serieid={9F1C3DB1-6E7B-4CF1-AF53-F480B0CB40EF}&sort=title
Publisher
Forest & Landscape. Denmark
Year
0
ISBN
 
Description
A series of leaflets, jointly produced by the University of Copenhagen and the Royal Botanic Gardens at Kew, focussing on seed information for a number species, but also giving a lot of other information about each plant.
,
404
Title
Digital Compendium of Forestry Species of Cambodia
Publication
 
Author
 
Website
http://www.digitalspecies.blogspot.com
Publisher
www.digitalspecies.blogspot.com; Phnom Penh
Year
2008
ISBN
 
Description
A very detailed booklet, produced in PDF format on the internet, giving information on around 100 species of trees.
]. It is often found on poor quality, acid soils[
598
Title
Trees of Laos and Vietnam - A Field Guide to 100 species.
Publication
 
Author
Hoang Van Sam; Khamseng Nanthavong; Kessler P.J.A.
Publisher
Blumea
Year
2004
ISBN
 
Description
A detailed guide, with excellent line-drawings, to 100 of the more important trees of Laos and Vietnam. A very good work, giving lots of information about each plant. Originally published in the journal Blumea, it is available as a PDF on the Interne
]. Prefers a pH in the range 4.5 - 5.5, tolerating 4 - 6.5[
418
Title
Ecocrop
Publication
 
Author
 
Website
http://ecocrop.fao.org/ecocrop/srv/en/home
Publisher
 
Year
0
ISBN
 
Description
Basic information on a wide range of useful plants, plus details of environmental needs where available.
]. Established plants are drought tolerant[
598
Title
Trees of Laos and Vietnam - A Field Guide to 100 species.
Publication
 
Author
Hoang Van Sam; Khamseng Nanthavong; Kessler P.J.A.
Publisher
Blumea
Year
2004
ISBN
 
Description
A detailed guide, with excellent line-drawings, to 100 of the more important trees of Laos and Vietnam. A very good work, giving lots of information about each plant. Originally published in the journal Blumea, it is available as a PDF on the Interne
]. The plant is very wind tolerant[
404
Title
Digital Compendium of Forestry Species of Cambodia
Publication
 
Author
 
Website
http://www.digitalspecies.blogspot.com
Publisher
www.digitalspecies.blogspot.com; Phnom Penh
Year
2008
ISBN
 
Description
A very detailed booklet, produced in PDF format on the internet, giving information on around 100 species of trees.
].
This is one of several Pinus species that have a juvenile life stage. After germinating, the seedlings produce secondary foliage but the central shoot does not elongate - at this stage the plant looks more like a bunchgrass than a pine. Especially when growing in shade, the plant can remain in this juvenile stage for several years, developing a large taproot but not increasing in height. If the light levels increase (due to removal of tree cover by fire, deforestation or some other reason) then the plant commences rapid height growth[
329
Title
The Gymnosperm Database
Publication
 
Author
 
Website
http://www.conifers.org/index.htm
Publisher
 
Year
0
ISBN
 
Description
A vast amount of information on conifers and families of gymnosperms.
].
Harvesting of the resin can start about 15 years after being planted out[
598
Title
Trees of Laos and Vietnam - A Field Guide to 100 species.
Publication
 
Author
Hoang Van Sam; Khamseng Nanthavong; Kessler P.J.A.
Publisher
Blumea
Year
2004
ISBN
 
Description
A detailed guide, with excellent line-drawings, to 100 of the more important trees of Laos and Vietnam. A very good work, giving lots of information about each plant. Originally published in the journal Blumea, it is available as a PDF on the Interne
]. Trees can yield 3 - 4 kilos of resin a year, with some reports claiming that older trees can yield up to 30 - 60 kilos of crude gum a year[
404
Title
Digital Compendium of Forestry Species of Cambodia
Publication
 
Author
 
Website
http://www.digitalspecies.blogspot.com
Publisher
www.digitalspecies.blogspot.com; Phnom Penh
Year
2008
ISBN
 
Description
A very detailed booklet, produced in PDF format on the internet, giving information on around 100 species of trees.
]. Old trees can yield 30 - 60 kg of crude gum per year, producing 20 - 40 kg of pure resin and 7 - 14 kg of turpentine per year[
325
Title
Seed Leaflets
Publication
 
Author
Various
Website
http://en.sl.life.ku.dk/Publikationer/Udgivelser/PopulaerPublikationer.aspx?katid={D28373CC-6EF3-4EF8-B097-6D83FABF209E}&serieid={9F1C3DB1-6E7B-4CF1-AF53-F480B0CB40EF}&sort=title
Publisher
Forest & Landscape. Denmark
Year
0
ISBN
 
Description
A series of leaflets, jointly produced by the University of Copenhagen and the Royal Botanic Gardens at Kew, focussing on seed information for a number species, but also giving a lot of other information about each plant.
].
In plantations, trees reach sexual maturity when about 20 years old. They bear cones every year, although seed production varies[
303
Title
World Agroforesty Centre
Publication
 
Author
 
Website
http://www.worldagroforestry.org/
Publisher
 
Year
0
ISBN
 
Description
An excellent online database of a huge range of trees giving very good information on each plant - its uses, ecology, identity, propagation, pests etc.
].
In plantations, the first thinning is usually carried out in the 9th or 10th year, and about every 5 years thereafter. Rotation cycles of 30 years are needed for optimal timber production[
303
Title
World Agroforesty Centre
Publication
 
Author
 
Website
http://www.worldagroforestry.org/
Publisher
 
Year
0
ISBN
 
Description
An excellent online database of a huge range of trees giving very good information on each plant - its uses, ecology, identity, propagation, pests etc.
]. For the production of pulpwood, a cutting cycle of 15 years is usually practised[
303
Title
World Agroforesty Centre
Publication
 
Author
 
Website
http://www.worldagroforestry.org/
Publisher
 
Year
0
ISBN
 
Description
An excellent online database of a huge range of trees giving very good information on each plant - its uses, ecology, identity, propagation, pests etc.
].
Mycorrhizae are required for successful growth and to allow seedlings to survive in more adverse sites[
303
Title
World Agroforesty Centre
Publication
 
Author
 
Website
http://www.worldagroforestry.org/
Publisher
 
Year
0
ISBN
 
Description
An excellent online database of a huge range of trees giving very good information on each plant - its uses, ecology, identity, propagation, pests etc.
].
The prolonged 'grass stage' often present in young trees means increased weeding requirements when compared to Pinus caribaea, Pinus oocarpa and Pinus kesiya[
303
Title
World Agroforesty Centre
Publication
 
Author
 
Website
http://www.worldagroforestry.org/
Publisher
 
Year
0
ISBN
 
Description
An excellent online database of a huge range of trees giving very good information on each plant - its uses, ecology, identity, propagation, pests etc.
].
This is the southernmost occurring pine of all pines, and the only one whose natural distribution extends into the southern hemisphere[
303
Title
World Agroforesty Centre
Publication
 
Author
 
Website
http://www.worldagroforestry.org/
Publisher
 
Year
0
ISBN
 
Description
An excellent online database of a huge range of trees giving very good information on each plant - its uses, ecology, identity, propagation, pests etc.
].
Merkus pines of the Asian mainland and the Philippines differ slightly from those of Sumatra: the seedlings have a 'grass stage', the needles are slightly longer, the cones are less cylindrical, and the seeds nearly twice as heavy[
303
Title
World Agroforesty Centre
Publication
 
Author
 
Website
http://www.worldagroforestry.org/
Publisher
 
Year
0
ISBN
 
Description
An excellent online database of a huge range of trees giving very good information on each plant - its uses, ecology, identity, propagation, pests etc.
].
Plants in this genus are notably susceptible to honey fungus[
200
Title
The New RHS Dictionary of Gardening. 1992.
Publication
 
Author
Huxley. A.
Publisher
MacMillan Press
Year
1992
ISBN
0-333-47494-5
Description
Excellent and very comprehensive, though it contains a number of silly mistakes. Readable yet also very detailed.
].

Edible Uses

The seeds of all Pinus species are more or less edible, and some are of good size and make very tasty and nutritious foods, often eaten in quantitiy. Others can be less desireable, either having a strongly resinous flavour, being bitter or, more commonly, rather too small and fiddly to make it very worthwhle even trying to eat them,
We have no specific information of the desireability of this species, though they are rather small (the size given includes the shell)[
K
Title
Plants for a Future
Author
Ken Fern
Description
Notes from observations, tasting etc at Plants For A Future and on field trips.
].
The seed is around 7mm long[
329
Title
The Gymnosperm Database
Publication
 
Author
 
Website
http://www.conifers.org/index.htm
Publisher
 
Year
0
ISBN
 
Description
A vast amount of information on conifers and families of gymnosperms.
].

A vanillin flavouring is obtained as a by-product of other resins that are released from the pulpwood[
200
Title
The New RHS Dictionary of Gardening. 1992.
Publication
 
Author
Huxley. A.
Publisher
MacMillan Press
Year
1992
ISBN
0-333-47494-5
Description
Excellent and very comprehensive, though it contains a number of silly mistakes. Readable yet also very detailed.
].

Medicinal

Oil of turpentine, obtained from the oleo-resin of all pine trees, is antiseptic, antispasmodic, astringent, diuretic, rubefacient, stimulant and vermifuge[
4
Title
A Modern Herbal.
Publication
 
Author
Grieve.
Publisher
Penguin
Year
1984
ISBN
0-14-046-440-9
Description
Not so modern (1930's?) but lots of information, mainly temperate plants.
,
329
Title
The Gymnosperm Database
Publication
 
Author
 
Website
http://www.conifers.org/index.htm
Publisher
 
Year
0
ISBN
 
Description
A vast amount of information on conifers and families of gymnosperms.
]. It is a valuable remedy used internally in the treatment of kidney and bladder complaints and is used both internally and as a rub and steam bath in the treatment of rheumatic affections[
4
Title
A Modern Herbal.
Publication
 
Author
Grieve.
Publisher
Penguin
Year
1984
ISBN
0-14-046-440-9
Description
Not so modern (1930's?) but lots of information, mainly temperate plants.
]. It is also very beneficial to the respiratory system and so is useful in treating diseases of the mucous membranes and respiratory complaints such as coughs, colds, influenza and TB[
4
Title
A Modern Herbal.
Publication
 
Author
Grieve.
Publisher
Penguin
Year
1984
ISBN
0-14-046-440-9
Description
Not so modern (1930's?) but lots of information, mainly temperate plants.
].
Applied externally in the form of liniment plasters, poultices, herbal steam baths and inhalers, it is a very beneficial treatment for a variety of skin complaints, wounds, sores, burns, boils etc[
4
Title
A Modern Herbal.
Publication
 
Author
Grieve.
Publisher
Penguin
Year
1984
ISBN
0-14-046-440-9
Description
Not so modern (1930's?) but lots of information, mainly temperate plants.
].

Agroforestry Uses:

A pioneer species, its natural range is extended by colonization following disturbances such as fire[
303
Title
World Agroforesty Centre
Publication
 
Author
 
Website
http://www.worldagroforestry.org/
Publisher
 
Year
0
ISBN
 
Description
An excellent online database of a huge range of trees giving very good information on each plant - its uses, ecology, identity, propagation, pests etc.
]. It grows, for instance, scattered in fire-prone grassland and woodland[
303
Title
World Agroforesty Centre
Publication
 
Author
 
Website
http://www.worldagroforestry.org/
Publisher
 
Year
0
ISBN
 
Description
An excellent online database of a huge range of trees giving very good information on each plant - its uses, ecology, identity, propagation, pests etc.
]. The trees are increasing in number in recently disturbed areas[
303
Title
World Agroforesty Centre
Publication
 
Author
 
Website
http://www.worldagroforestry.org/
Publisher
 
Year
0
ISBN
 
Description
An excellent online database of a huge range of trees giving very good information on each plant - its uses, ecology, identity, propagation, pests etc.
].
The tree is often used for the rehabilitation of degraded areas because of its tolerance to fire and poor soil conditions[
325
Title
Seed Leaflets
Publication
 
Author
Various
Website
http://en.sl.life.ku.dk/Publikationer/Udgivelser/PopulaerPublikationer.aspx?katid={D28373CC-6EF3-4EF8-B097-6D83FABF209E}&serieid={9F1C3DB1-6E7B-4CF1-AF53-F480B0CB40EF}&sort=title
Publisher
Forest & Landscape. Denmark
Year
0
ISBN
 
Description
A series of leaflets, jointly produced by the University of Copenhagen and the Royal Botanic Gardens at Kew, focussing on seed information for a number species, but also giving a lot of other information about each plant.
].
The tree has been successfully intercropped with Irish potatoes[
303
Title
World Agroforesty Centre
Publication
 
Author
 
Website
http://www.worldagroforestry.org/
Publisher
 
Year
0
ISBN
 
Description
An excellent online database of a huge range of trees giving very good information on each plant - its uses, ecology, identity, propagation, pests etc.
].
The tree is used to shade out alang-alang grass with fairly good results[
303
Title
World Agroforesty Centre
Publication
 
Author
 
Website
http://www.worldagroforestry.org/
Publisher
 
Year
0
ISBN
 
Description
An excellent online database of a huge range of trees giving very good information on each plant - its uses, ecology, identity, propagation, pests etc.
].
The needles contain a substance called terpene, this is released when rain washes over the needles and it has a negative effect on the germination of some plants, including wheat[
201
Title
A - Z of Companion Planting.
Publication
 
Author
Allardice.P.
Publisher
Cassell Publishers Ltd.
Year
1993
ISBN
0-304-34324-2
Description
A well produced and very readable book.
].

Other Uses

A tan or green dye is obtained from the needles[
168
Title
Nature's Colors - Dyes from Plants.
Publication
 
Author
Grae. I.
Publisher
MacMillan Publishing Co. New York.
Year
1974
ISBN
0-02-544950-8
Description
A very good and readable book on dyeing.
].

A good quality oleoresin is collected from this species, often on a plantation scale[
303
Title
World Agroforesty Centre
Publication
 
Author
 
Website
http://www.worldagroforestry.org/
Publisher
 
Year
0
ISBN
 
Description
An excellent online database of a huge range of trees giving very good information on each plant - its uses, ecology, identity, propagation, pests etc.
]. The species is a high resin yielder and commercial tapping is often practised[
325
Title
Seed Leaflets
Publication
 
Author
Various
Website
http://en.sl.life.ku.dk/Publikationer/Udgivelser/PopulaerPublikationer.aspx?katid={D28373CC-6EF3-4EF8-B097-6D83FABF209E}&serieid={9F1C3DB1-6E7B-4CF1-AF53-F480B0CB40EF}&sort=title
Publisher
Forest & Landscape. Denmark
Year
0
ISBN
 
Description
A series of leaflets, jointly produced by the University of Copenhagen and the Royal Botanic Gardens at Kew, focussing on seed information for a number species, but also giving a lot of other information about each plant.
]. The resin is obtained by tapping the trunk, or by destructive distillation of the wood, it can then be distilled to give turpentine and rosin[
4
Title
A Modern Herbal.
Publication
 
Author
Grieve.
Publisher
Penguin
Year
1984
ISBN
0-14-046-440-9
Description
Not so modern (1930's?) but lots of information, mainly temperate plants.
,
64
Title
Vegetable Gums and Resins.
Publication
 
Author
Howes. F. N.
Publisher
Faber
Year
 
ISBN
81-88818-17-8
Description
A very good book dealing with the subject in a readable way.
,
299
Title
Protabase - Plant Resources of Tropical Africa.
Publication
 
Author
 
Website
http://www.prota.org
Publisher
 
Year
0
ISBN
 
Description
An excellent on-line database with detailed information on over 3,200 species of useful plants of Africa.
].
Oil of Turpentine consists of an average of 20% of the oleo-resin[
4
Title
A Modern Herbal.
Publication
 
Author
Grieve.
Publisher
Penguin
Year
1984
ISBN
0-14-046-440-9
Description
Not so modern (1930's?) but lots of information, mainly temperate plants.
,
64
Title
Vegetable Gums and Resins.
Publication
 
Author
Howes. F. N.
Publisher
Faber
Year
 
ISBN
81-88818-17-8
Description
A very good book dealing with the subject in a readable way.
]. It has a wide range of uses including as a solvent for waxes etc, for thinning and dissolving varnish and paints, a shoe polish, medicinal etc[
4
Title
A Modern Herbal.
Publication
 
Author
Grieve.
Publisher
Penguin
Year
1984
ISBN
0-14-046-440-9
Description
Not so modern (1930's?) but lots of information, mainly temperate plants.
,
329
Title
The Gymnosperm Database
Publication
 
Author
 
Website
http://www.conifers.org/index.htm
Publisher
 
Year
0
ISBN
 
Description
A vast amount of information on conifers and families of gymnosperms.
].
Rosin is used in paper glue and soap manufacturing, as a constituent of varnishes and paints, and for coating the bows of stringed musical instruments such as violins[
4
Title
A Modern Herbal.
Publication
 
Author
Grieve.
Publisher
Penguin
Year
1984
ISBN
0-14-046-440-9
Description
Not so modern (1930's?) but lots of information, mainly temperate plants.
,
329
Title
The Gymnosperm Database
Publication
 
Author
 
Website
http://www.conifers.org/index.htm
Publisher
 
Year
0
ISBN
 
Description
A vast amount of information on conifers and families of gymnosperms.
].
Pitch can also be obtained from the resin and is used for waterproofing, as a wood preservative etc[
329
Title
The Gymnosperm Database
Publication
 
Author
 
Website
http://www.conifers.org/index.htm
Publisher
 
Year
0
ISBN
 
Description
A vast amount of information on conifers and families of gymnosperms.
].

The resin-rich wood is used as torches[
598
Title
Trees of Laos and Vietnam - A Field Guide to 100 species.
Publication
 
Author
Hoang Van Sam; Khamseng Nanthavong; Kessler P.J.A.
Publisher
Blumea
Year
2004
ISBN
 
Description
A detailed guide, with excellent line-drawings, to 100 of the more important trees of Laos and Vietnam. A very good work, giving lots of information about each plant. Originally published in the journal Blumea, it is available as a PDF on the Interne
].

The heartwood is yellowish to orange brown with dark red veins and numerous resin canals, darkening on exposure to light; it is clearly demarcated from the 2 - 5cm wide band of whitish to creamy white sapwood. The texture is moderately coarse; the grain straight; the surface lustrous when freshly cut but becoming dull with age; there is a resinous odour and a faint resinous taste. The wood is moderately heavy; soft to moderately hard; fairly durable and not easily rotting in the soil according to some reports[
46
Title
Dictionary of Economic Plants.
Publication
 
Author
Uphof. J. C. Th.
Publisher
Weinheim
Year
1959
ISBN
-
Description
An excellent and very comprehensive guide but it only gives very short descriptions of the uses without any details of how to utilize the plants. Not for the casual reader.
,
303
Title
World Agroforesty Centre
Publication
 
Author
 
Website
http://www.worldagroforestry.org/
Publisher
 
Year
0
ISBN
 
Description
An excellent online database of a huge range of trees giving very good information on each plant - its uses, ecology, identity, propagation, pests etc.
], but non-durable and liable to termite attack according to others[
316
Title
Tropical Timbers of the World. Ag. Handbook No. 607.
Publication
 
Author
Chudnoff. Martin.
Publisher
USDA Forest Service. Wisconsin.
Year
1984
ISBN
 
Description
Terse details on the properties of the wood of almost 400 species of trees from the Tropics.
,
848
Title
Tropix 7
Publication
 
Author
 
Website
http://tropix.cirad.fr/en
Publisher
CIRAD
Year
0
ISBN
 
Description
An on-line guide to the timbers of 245 species of trees.
]. It seasons quickly with little risk of checking or distortion; once dry it is moderately stable in service. The wood saws easily and works to a good finish, though resins may clog cutters and tools. The timber is a general-purpose softwood, useful for light construction, joinery, window frames, door frames, flooring, furniture, matches, chop-sticks, paper pulp, long fibre pulp, pit props, transmission poles, ship- and boat construction, vehicle-building, containers, boxes[
46
Title
Dictionary of Economic Plants.
Publication
 
Author
Uphof. J. C. Th.
Publisher
Weinheim
Year
1959
ISBN
-
Description
An excellent and very comprehensive guide but it only gives very short descriptions of the uses without any details of how to utilize the plants. Not for the casual reader.
,
303
Title
World Agroforesty Centre
Publication
 
Author
 
Website
http://www.worldagroforestry.org/
Publisher
 
Year
0
ISBN
 
Description
An excellent online database of a huge range of trees giving very good information on each plant - its uses, ecology, identity, propagation, pests etc.
,
316
Title
Tropical Timbers of the World. Ag. Handbook No. 607.
Publication
 
Author
Chudnoff. Martin.
Publisher
USDA Forest Service. Wisconsin.
Year
1984
ISBN
 
Description
Terse details on the properties of the wood of almost 400 species of trees from the Tropics.
,
325
Title
Seed Leaflets
Publication
 
Author
Various
Website
http://en.sl.life.ku.dk/Publikationer/Udgivelser/PopulaerPublikationer.aspx?katid={D28373CC-6EF3-4EF8-B097-6D83FABF209E}&serieid={9F1C3DB1-6E7B-4CF1-AF53-F480B0CB40EF}&sort=title
Publisher
Forest & Landscape. Denmark
Year
0
ISBN
 
Description
A series of leaflets, jointly produced by the University of Copenhagen and the Royal Botanic Gardens at Kew, focussing on seed information for a number species, but also giving a lot of other information about each plant.
,
404
Title
Digital Compendium of Forestry Species of Cambodia
Publication
 
Author
 
Website
http://www.digitalspecies.blogspot.com
Publisher
www.digitalspecies.blogspot.com; Phnom Penh
Year
2008
ISBN
 
Description
A very detailed booklet, produced in PDF format on the internet, giving information on around 100 species of trees.
,
848
Title
Tropix 7
Publication
 
Author
 
Website
http://tropix.cirad.fr/en
Publisher
CIRAD
Year
0
ISBN
 
Description
An on-line guide to the timbers of 245 species of trees.
]. The wood from trees that have been regularly tapped for their oleoresin have a ood of lower quality. This wood is harvested for the pulp industry to manufacture paper, a process which allows a final extraction of the resin in the wood[
338
Title
IUCN Red List of Threatened Species
Publication
 
Author
 
Website
http://www.iucnredlist.org/
Publisher
 
Year
0
ISBN
 
Description
A list of plants under threat and facing possible extinction, usually with brief details of the threats and information on habitat.
].
The wood is used for fuel and to make charcoal[
404
Title
Digital Compendium of Forestry Species of Cambodia
Publication
 
Author
 
Website
http://www.digitalspecies.blogspot.com
Publisher
www.digitalspecies.blogspot.com; Phnom Penh
Year
2008
ISBN
 
Description
A very detailed booklet, produced in PDF format on the internet, giving information on around 100 species of trees.
].

Propagation

Seed - no pre-treatment is required, although germination can be sped up by soaking the seed overnight in cold water prior to sowing[
303
Title
World Agroforesty Centre
Publication
 
Author
 
Website
http://www.worldagroforestry.org/
Publisher
 
Year
0
ISBN
 
Description
An excellent online database of a huge range of trees giving very good information on each plant - its uses, ecology, identity, propagation, pests etc.
]. Seeds germinate in 8 - 21 days[
303
Title
World Agroforesty Centre
Publication
 
Author
 
Website
http://www.worldagroforestry.org/
Publisher
 
Year
0
ISBN
 
Description
An excellent online database of a huge range of trees giving very good information on each plant - its uses, ecology, identity, propagation, pests etc.
]. A germination rate of 40 - 60% may be expected[
303
Title
World Agroforesty Centre
Publication
 
Author
 
Website
http://www.worldagroforestry.org/
Publisher
 
Year
0
ISBN
 
Description
An excellent online database of a huge range of trees giving very good information on each plant - its uses, ecology, identity, propagation, pests etc.
]. After about 8 months, nursery bed grown seedlings are 20 - 25 cm tall and ready for planting into the field[
303
Title
World Agroforesty Centre
Publication
 
Author
 
Website
http://www.worldagroforestry.org/
Publisher
 
Year
0
ISBN
 
Description
An excellent online database of a huge range of trees giving very good information on each plant - its uses, ecology, identity, propagation, pests etc.
].
Successful natural regeneration is only possible where a relatively large amount of sunlight reaches the ground[
303
Title
World Agroforesty Centre
Publication
 
Author
 
Website
http://www.worldagroforestry.org/
Publisher
 
Year
0
ISBN
 
Description
An excellent online database of a huge range of trees giving very good information on each plant - its uses, ecology, identity, propagation, pests etc.
].
Only cones that have just changed their colour from green to brown should be collected and air dried[
303
Title
World Agroforesty Centre
Publication
 
Author
 
Website
http://www.worldagroforestry.org/
Publisher
 
Year
0
ISBN
 
Description
An excellent online database of a huge range of trees giving very good information on each plant - its uses, ecology, identity, propagation, pests etc.
].
Pine seeds can usually be stored for several years, provided they are kept dry, cold and in an airtight container[
303
Title
World Agroforesty Centre
Publication
 
Author
 
Website
http://www.worldagroforestry.org/
Publisher
 
Year
0
ISBN
 
Description
An excellent online database of a huge range of trees giving very good information on each plant - its uses, ecology, identity, propagation, pests etc.
]. However, seeds of this species are reported to have a rather short viability; seeds from Sumatra can be stored dry for only 1 - 2 years, and those from continental Asia for an even shorter period[
303
Title
World Agroforesty Centre
Publication
 
Author
 
Website
http://www.worldagroforestry.org/
Publisher
 
Year
0
ISBN
 
Description
An excellent online database of a huge range of trees giving very good information on each plant - its uses, ecology, identity, propagation, pests etc.
].
Propagation by tissue culture is possible. Suspensor, root tissue and hypocotyl segments of 2-week-old seedlings of P. merkusii have been used, and they all readily yield callus when cultured on a Murashige and Skoog mineral formulation supplemented with naphthalene acetic acid (0.25-0.65 ppm) and benzylamino purine (1.0-2.0 ppm)[
303
Title
World Agroforesty Centre
Publication
 
Author
 
Website
http://www.worldagroforestry.org/
Publisher
 
Year
0
ISBN
 
Description
An excellent online database of a huge range of trees giving very good information on each plant - its uses, ecology, identity, propagation, pests etc.
].
Cite as: Tropical Plants Database, Ken Fern. tropical.theferns.info. 2019-06-18. <tropical.theferns.info/viewtropical.php?id=Pinus+merkusii>

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