Pseudotsuga macrocarpa

Großzapfige Douglas fir in Southern California

The Großzapfige Douglas Fir ( Pseudotsuga macrocarpa) is a species of the genus of Douglas fir (Pseudotsuga). The well encountered designation " Large-fruited Douglas " is botanically incorrect because gymnosperms ( gymnosperms ) have no fruit, and should therefore be avoided. The Großzapfige Douglas fir is native to the mountainous slopes in southwestern California. The species is hardy in Central Europe, but is rarely planted.

Description

The Großzapfige Douglas is reached by 100 centimeters an evergreen tree, the plant height of about 18 to 30 meters and trunk diameter ( DBH ). She looks Pseudotsuga menziesii subsp. glauca very similar. The bark of the branches is smooth or hairy. The needle-like leaves are bluish green (rarely to 20 ) usually 25 to 45 millimeters long and 1 to 1.5 millimeters wide.

The Douglas fir is monoecious Großzapfige getrenntgeschlechtig ( monoecious ). The male cones are bright yellow. The most striking feature is the female at the center of the thickest and tapering to both sides cones; they have a length of 9-20 cm and a diameter of 4-7 cm. The seeds are 9 to 12 millimeters in length.

Swell

• Christopher J. Earle: Pseudotsuga macrocarpa. In: The Gymnosperm Database. May 17, 2011, retrieved November 4, 2011 (English).