Vascular Plants - Pinaceae - Pinus:
Pinus ponderosa
Page Author: Don Knoke
ponderosa pine, western yellow pine, blackjack or bull pine 
Blooms: May - June
Habit: tree
Duration: perennial
Origin: Native
Distribution: Mostly east of the Cascades, British Columbia to Baja California, east to the Dakotas and Texas; in a few localities in the Puget Trough, Washington, and the Willamette Valley Oregon
Habitat: Mostly dry areas in open forests at low to moderate elevations
Species Description:

General: Large forest tree up to 70 m. tall.
Bark: Bark thick, that of younger trees deeply furrowed and dark reddish-brown or blackish, gradually changing to cinnamon-red in older trees, divided into large plates that freely flake off.
Leaves: Needles usually in clusters of 3 toward the branch ends, 12-20 cm. long, yellowish-green, on spur branches that are ultimately deciduous with the needles.
Cones: Staminate cones yellow to purplish, strongly clustered, crowded at the base of shoots of the current season; ovulate cones near the branch tips, reddish-purple when young, sub-sessile, nearly horizontal, becoming reddish-brown, then brown when mature, broadly ovate, 8-14 cm. long, the scales chocolate-brown, with a thickened, yellowish-brown, strongly prickly tip.
Subspecies & Varieties:
Accepted Name:
Pinus ponderosa P.& C. Lawson
Synonyms:
(none)

Treated in Flora of the PNW as:
Pinus ponderosa
Additional Resources:

PNW Herbaria Specimens: View list of all Pinus ponderosa specimens in the Consortium of Pacific Northwest Herbaria database.

WTU Herbarium Specimens: View list of Pinus ponderosa specimens in the WTU Herbarium database.

Washington Flora Checklist: Pinus ponderosa treatment.

E-Flora BC: Pinus ponderosa atlas page.

CalPhotos: Pinus ponderosa images.

USDA Plants Database: Pinus ponderosa.
Additional photographs of Pinus ponderosa:
(click on a thumbnail to view larger photo)

Ben Legler, 2004

Ben Legler, 2004

Ben Legler, 2004

Clayton J. Antieau, 2004

Dana Visalli

Dana Visalli

Bud Kovalchik

Bud Kovalchik

Bud Kovalchik

Bud Kovalchik

Bud Kovalchik

Bud Kovalchik

Bud Kovalchik

David Giblin, 2009

Rod Gilbert , 2005

Clayton J. Antieau, 2007

Clayton J. Antieau, 2009

G. D. Carr, 1985

G. D. Carr, 1988

G. D. Carr, 2010

G. D. Carr, 2010

G. D. Carr, 2010

G. D. Carr, 2010

G. D. Carr, 2010

G. D. Carr, 2010

G. D. Carr, 2010

G. D. Carr, 2010

G. D. Carr, 2003

G. D. Carr, 2003

G. D. Carr, 2010

Robert L. Carr, 2010

Regina Johnson, 2011

Susan McDougall, 2006

Susan McDougall, 2005

Ron Bockelman, 2010

Ron Bockelman, 2010

Susan McDougall, 2009

Susan McDougall, 2011

Susan McDougall, 2011

Susan McDougall, 2011

Susan McDougall, 2011

Susan McDougall, 2009

Susan McDougall, 2007

Ron Bockelman, 2013

Ron Bockelman, 2013

Ron Bockelman, 2013

Ron Bockelman, 2013

Ron Bockelman, 2013

Ron Bockelman, 2013

Ron Bockelman, 2013

Ron Bockelman, 2013

Brian Luther, 2016

Brian Luther, 2016

Brian Luther, 2016

Brian Luther, 2010
(password required)

Burke Museum


©2017 Burke Museum of Natural History and Culture.
All Rights Reserved. Box 353010, University of Washington,
Seattle, WA 98195-3010, Phone: 206-543-5590.
On the UW campus at 17th Avenue NE and NE 45th Street.
Washington Native Plant Society
WA Native Plant Society