Douglas Fir
Pseudotsuga menziesii · Pinaceae (Pine family)
AI-generated identification · may be incorrect
Leaf Morphology
Leaf Type
Specialized needle, evergreen
Shape
Linear, flat, single needles attached directly to small woody projections on the twig
Margin
Entire (smooth)
Arrangement
Spiral/alternate arrangement individually along the twig, often appearing somewhat flattened in two rows
Venation
Parallel (single central resin canal/vein per needle)
Key Features
Flexible, flat needles individually attached to tiny raised woody pegs (sterigmata) on the twig, and most importantly, the distinctive three-pointed (trident-shaped) bracts that protrude from between the scales of the mature seed cones
Description
The Douglas Fir is one of the world's most majestic and economically important evergreen conifers. Growing to massive heights with thick, deeply furrowed, dark brown bark, it produces drooping, cylindrical seed cones with distinctive three-pronged bracts. The foliage consists of soft, flat, aromatic needles that release a sweet, fruity scent when crushed.
Habitat
Mountainous and coastal regions, thriving in cool, moist climates, well-draining acidic to neutral soils, and full sun to partial shade
Native Range
Native to western North America, stretching from British Columbia down through California and into the Rocky Mountains; widely planted as an ornamental and timber tree globally