douglas linh sam, douglas fir, linh sam douglas Pinaceae Pseudotsuga menziesii
Leaf: Evergreen, single needles that lack woody pegs hoặc suction cups. Needles are yellow-green to blue-green, 3/4 to 1 1/4 inch long, very fragrant. Needle tips are blunt hoặc slightly rounded.
Flower: Monoecious; males oblong, red to yellow, near branch tips; females reddish, with long bracts, occurring near branch tips.
Fruit: Very distinctive, 3 to 4 inches long with rounded scales. Three-lobed bracts extend beyond the cone scales and resemble chuột posteriors. Maturing in August.
Twig: Slender and red-brown, with long, sharp, pointed, red-brown buds.
Bark: Smooth and gray on young stems, becoming thickened, red-brown with ridges and deep furrows.
Form: A pyramidal crown that is somewhat open and self-prunes poorly. Stems are characteristically straight.
