Arizona Naturalists >>> Ponderosa Woodland Flora >>> Pinaceae >>> Pseudotsuga menziesii

Douglas Fir

Pseudotsuga menziesii

Douglas Fir, Pseudotsuga menziesii, photo © by Mike Plagens

Observed at Reynold's Canyon, Sierra Ancha, Gila Co., Arizona, USA. June 2010.

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CONES: Seed cones small with soft scales. The seeds, nestled between the scales, have a papery, three-pointed wing exposed from between the scales.

LEAVES: Leaves are slightly flattened needles not in fascicles - arrayed singly along the stems and arrayed more-or-less equally around the stem. Aromatic when crushed like fresh pine.

TREE: Reaches rather large proportions in Arizona (40m) in old-growth forest (even taller in Northwest forests). But in most areas that are easily accessible, second growth, smaller trees prevail.

RANGE: Widespread in the upper half of the elevational range of ponderosa in Arizona and extending into the lower spruce zones. Widespread across the Mountains of western North America south into northern Mexico.

UNARMED. Thornless.

Pinaceae -- Pine Family

More Information:

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Arizona Naturalist
Arizona's Ponderosa Woodlands
The Flora of Arizona's Ponderosa Woodlands


Copyright Michael J. Plagens, page created 19 Sept. 2012