E-Flora BC: Electronic Atlas of the Flora of British Columbia

Pinus banksiana Lamb.
jack pine
Pinaceae (Pine family)

Introduction to Vascular Plants

© Virginia Skilton  Email the photographer   (Photo ID #71180)

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Distribution of Pinus banksiana
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Introduction

Jack Pine is a tall evergreen coniferous species of tree that is rare in the northeastern corner of the province.

Species Information

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General:
Tree to 30 m tall; straight and columnar with narrow rounded crown; bark reddish-brown to blackish, cracked at the base and somewhat flaky above.
Leaves:
Needles in groups of two, not twisted, 1-4 cm long; deep green.
Cones:
Seed cones egg-shaped, lopsided, 3-6 cm long; bracts stiff, not armed; serotinous; pollen cones reddish green in clusters at tips of branches.
Notes:
Hybridizes with P. contorta var. latifolia; these have been named P. x murraybanksiana Righter & Stockwell.

Source: The Illustrated Flora of British Columbia

USDA Species Characteristics

Flower Colour:
Yellow
Blooming Period:
Late Spring
Fruit/Seed characteristics:
Colour: Brown
Present over the Fall
Source:  The USDA

Habitat / Range

Dry slopes in the montane zone: rare in extreme NE BC; N to NT, E to PQ, PE and NS, and S to MN, MS, IL and NY.

Source: The Illustrated Flora of British Columbia

Ecology

Ecological Framework for Pinus banksiana

The table below shows the species-specific information calculated from
original data (BEC database) provided by the BC Ministry of Forests and Range.
(Updated August, 2013)

Site Information
Value / Class

Minimum

Average

Maximum

Elevation (metres) 440 505 620
Slope Gradient (%) 0 1 5
Aspect (degrees)
[0 - N; 90 - E; 180 - S; 270 - W]
50 49 50
Soil Moisture Regime (SMR)
[0 - very xeric; 4 - mesic;
8 - hydric]
1 3 6
Modal Nutrient Regime
Class
B
Number of field plots
 species was recorded in:
5
Modal BEC Zone Class
BWBS
All BEC Zones (# of stations/zone) species was recorded in: BWBS(5)

Climate

The climate type for this species, as reported in the: "British Columbia plant species codes and selected attributes. Version 6 Database" (Meidinger et al. 2008), is not evaluated, unknown or variable.

Synonyms and Alternate Names

Pinus divaricata (Aiton) Sudw.

Taxonomic and Nomenclatural Links

Additional Photo Sources

Related Databases

General References