Uses
Toxic parts
Edible uses
Notes
The crystallised sap has been gathered and eaten like candy[7].
A vanillin flavouring is obtained as a by-product of other resins that are released from the pulpwood[6].Unknown part
Sap
Seed
Material uses
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[9]. Oleo-resins are present in the tissues of all species of pines, but these are often not present in sufficient quantity to make their extraction economically worthwhile[10]. The resins are obtained by tapping the trunk, or by destructive distillation of the wood[11][10]. In general, trees from warmer areas of distribution give the higher yields[10]. Turpentine consists of an average of 20% of the oleo-resin[10] and is separated by distillation[11][10]. Turpentine has a wide range of uses including as a solvent for waxes etc, for making varnish, medicinal etc[11]. Rosin is the substance left after turpentine is removed. This is used by violinists on their bows and also in making sealing wax, varnish etc[11]. Pitch can also be obtained from the resin and is used for waterproofing, as a wood preservative etc. The resin contained in this plant is very unusual in that it contains the hydrocarbon n-heptane. This is unmixed with other isomers of heptane and is formed by a very complex and little understood biochemical process. Its purity lead it to be used as the zero-point in the octane rating for petrol[6].
Wood - light, strong and fine-grained, it can vary from soft to hard[12]. It is used for making furniture, boxes, toys etc[12]Medicinal uses(Warning!)
Ecology
Ecosystem niche/layer
Ecological Functions
Nothing listed.
Forage
Nothing listed.
Shelter
Nothing listed.
Propagation
Practical Plants is currently lacking information on propagation instructions of Pinus jeffreyi. Help us fill in the blanks! Edit this page to add your knowledge.
Cultivation
This species is not hardy in the colder areas of the country, it tolerates temperatures down to between -5 and -10°c[6]. A very ornamental plant[18]. It is often short-lived in Britain but is moderately fast growing with some trees reaching a height of 15 metres in 29 years[19]. A long-lived tree in the wild, specimens 500 years old are known[12]. It commences bearing seeds when about 10 - 15 years old, though good production does not commence until twice that age[12]. Leaf secretions inhibit the germination of seeds, thereby inhibiting the growth of other plants below the tree[20]. Plants are strongly outbreeding, self-fertilized seed usually grows poorly[6]. They hybridize freely with other members of this genus[6]. Closely related to P. ponderosa[17], and hybridizes with it in the wild[21]. Some of the earlier plantings under this name in Britain have turned out to be P. ponderosa[19]. The cones are 12 - 35cm long, they open and shed their seed whilst still attached to the tree[5][22]. The resin from broken shoots has a very strong lemon scent[19].
Plants in this genus are notably susceptible to honey fungus[6].Crops
Problems, pests & diseases
Associations & Interactions
There are no interactions listed for Pinus jeffreyi. Do you know of an interaction that should be listed here? edit this page to add it.
Polycultures & Guilds
There are no polycultures listed which include Pinus jeffreyi.
Descendants
Cultivars
Varieties
None listed.
Subspecies
None listed.
Full Data
This table shows all the data stored for this plant.
- Drought
References
- ? Foster. S. & Duke. J. A. A Field Guide to Medicinal Plants. Eastern and Central N. America. Houghton Mifflin Co. ISBN 0395467225 (1990-00-00)
- ? 2.02.1 Tanaka. T. Tanaka's Cyclopaedia of Edible Plants of the World. Keigaku Publishing (1976-00-00)
- ? 3.03.1 Kunkel. G. Plants for Human Consumption. Koeltz Scientific Books ISBN 3874292169 (1984-00-00)
- ? 4.04.1 Facciola. S. Cornucopia - A Source Book of Edible Plants. Kampong Publications ISBN 0-9628087-0-9 (1990-00-00)
- ? 5.05.15.2 Sargent. C. S. Manual of the Trees of N. America. Dover Publications Inc. New York. ISBN 0-486-20278-X (1965-00-00)
- ? 6.006.016.026.036.046.056.066.076.086.096.106.116.12 Huxley. A. The New RHS Dictionary of Gardening. 1992. MacMillan Press ISBN 0-333-47494-5 (1992-00-00)
- ? 7.07.1 Moerman. D. Native American Ethnobotany Timber Press. Oregon. ISBN 0-88192-453-9 (1998-00-00)
- ? 8.08.1 Grae. I. Nature's Colors - Dyes from Plants. MacMillan Publishing Co. New York. ISBN 0-02-544950-8 (1974-00-00)
- ? 9.09.1 Allardice.P. A - Z of Companion Planting. Cassell Publishers Ltd. ISBN 0-304-34324-2 (1993-00-00)
- ? 10.010.110.210.310.410.5 Howes. F. N. Vegetable Gums and Resins. Faber ()
- ? 11.011.111.211.311.411.511.611.711.811.9 Grieve. A Modern Herbal. Penguin ISBN 0-14-046-440-9 (1984-00-00)
- ? 12.012.112.212.312.4 Elias. T. The Complete Trees of N. America. Field Guide and Natural History. Van Nostrand Reinhold Co. ISBN 0442238622 (1980-00-00)
- ? McMillan-Browse. P. Hardy Woody Plants from Seed. Grower Books ISBN 0-901361-21-6 (1985-00-00)
- ? 14.014.114.2 Bean. W. Trees and Shrubs Hardy in Great Britain. Vol 1 - 4 and Supplement. Murray (1981-00-00)
- ? Rushforth. K. Conifers. Christopher Helm ISBN 0-7470-2801-X (1987-00-00)
- ? ? Alpine Garden Society Bulletin. Volume 56. Alpine Garden Society ()
- ? 17.017.117.2 F. Chittendon. RHS Dictionary of Plants plus Supplement. 1956 Oxford University Press (1951-00-00)
- ? ? The Plantsman. Vol. 2. 1980 - 1981. Royal Horticultural Society (1980-00-00)
- ? 19.019.119.2 Mitchell. A. F. Conifers in the British Isles. HMSO ISBN 0-11-710012-9 (1975-00-00)
- ? Philbrick H. and Gregg R. B. Companion Plants. Watkins (1979-00-00)
- ? 21.021.1 Munz. A California Flora. University of California Press (1959-00-00)
- ? Lauriault. J. Identification Guide to the Trees of Canada Fitzhenry and Whiteside, Ontario. ISBN 0889025649 (1989-00-00)
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