Pinaceae FAMILY Least Concern

Pinus jeffreyi

Edibility

3/5

Medicinal

2/5

Safety & 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 Description

Pinus jeffreyi is an evergreen tree with a rounded to conic crown; it can grow up to 61 metres tall. The usually straight, cylindrical bole can be up to 250cm in diameter[ 270 Title Flora of N. America Publication Author Website http://flora.huh.harvard.edu/fna/ Publisher Year 0 ISBN Description An on-line version of the flora with an excellent description of the plant including a brief mention of plant uses. ]. The plant is traditionally harvested from the wild for local use as a food and source of materials. It is an important source of timber in its area, where it is often harvested from the wild for its wood - this is used locally and also traded, usually under the name of the closely related species Pinus ponderosa[ 270 Title Flora of N. America Publication Author Website http://flora.huh.harvard.edu/fna/ Publisher Year 0 ISBN Description An on-line version of the flora with an excellent description of the plant including a brief mention of plant uses. ]. The tree has also been harvested for its oleoresin, distillations of which have been used as an additive to petrol. It is sometimes grown as an ornamental. Pinus jeffreyi is very widespread and abundant and regenerates well after disturbance events, including logging. A potential threat to play a role in future reduction of subpopulations near urban centres is air pollution. However, no direct links between local die back and air pollution have yet been recorded. The plant is classified as 'Least Concern' 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. ].

Habitat & Origin

Origintemperate

Native RangeWestern N. America - southern Oregon, California, Nevada, Baja Norte.

HabitatUsually found in open, mixed conifer forests on dry and exposed slopes, at elevations from 300 - 3,050 metres[ 71 Title A California Flora. Publication Author Munz P.A. & Keck D.D. Publisher University of California Press; Los Angeles Year 1959 ISBN - Description An excellent flora but no pictures. Not for the casual reader. , 82 Title Manual of the Trees of N. America. Publication Author Sargent. C. S. Website http://www.biodiversitylibrary.org/ Publisher Dover Publications Inc. New York. Year 1965 ISBN 0-486-20278-X Description Two volumes, a comprehensive listing of N. American trees though a bit out of date now. Good details on habitats, some details on plant uses. Not really for the casual reader. It can be downloaded from the internet. , 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. ]. Found on a variety of soils, but growing best in those that are deep and well-drained[ 229 Title The Complete Trees of N. America. Field Guide and Natural History. Publication Author Elias. T. Publisher Van Nostrand Reinhold Co. Year 1980 ISBN 0442238622 Description A very good concise guide. Gives habitats, good descriptions, maps showing distribution and a few of the uses. It also includes the many shrubs that occasionally reach tree proportions. ].