Large-coned Douglas fir

Large-coned Douglas fir
	Large-coned Douglas fir in Southern California
Systematics
Class :	Coniferopsida
Order :	Conifers (Coniferales)
Family :	Pine family (Pinaceae)
Subfamily :	Laricoideae
Genre :	Douglas firs ( Pseudotsuga )
Type :	Large-coned Douglas fir
Scientific name
	Pseudotsuga macrocarpa
	( Vasey ) Mayr

The Pseudotsuga macrocarpa ( Pseudotsuga macrocarpa ) is a plant from the genus of Douglas fir ( Pseudotsuga ). The term "large-fruited Douglas fir", which is also found, is botanically incorrect, since naked samos (gymnosperms) have no fruits and should therefore be avoided.

description

The large-coned Douglas fir is an evergreen tree that reaches heights of about 18 to 30 meters and a trunk diameter ( BHD ) of 100 centimeters. She sees Pseudotsuga menziesii subsp. very similar to glauca . The bark of the branches is smooth or hairy. The needle-shaped leaves are bluish green, (rarely 20 to) usually 25 to 45 millimeters long and 1 to 1.5 millimeters wide.

The large-cone Douglas fir is single-sexed ( monoecious ). The male cones are light yellow. The most striking feature is the thickest in the middle and tapering to both sides of the female cones ; they have a length of 9 to 20 centimeters and a diameter of 4 to 7 centimeters. The seeds are 9 to 12 millimeters long.

Occurrence

The large-coned Douglas fir is native to the mountain slopes of southern California . The species is hardy in Central Europe , but is rarely planted.

Taxonomy

Pseudotsuga macrocarpa (Vasey) Mayr has the following synonyms: Abies macrocarpa Vasey , Abies douglasii var. Macrocarpa (Vasey) Vasey , Tsuga macrocarpa (Vasey) Lemmon , Pseudotsuga menziesii subsp. macrocarpa (Vasey) AEMurray or Pseudotsuga californica Flous .

swell

Christopher J. Earle: Pseudotsuga macrocarpa. In: The Gymnosperm Database. May 17, 2011, accessed November 4, 2011 .

Individual evidence

↑ ^a ^b Rafaël Govaerts (Ed.): Pseudotsuga. In: World Checklist of Selected Plant Families (WCSP) - The Board of Trustees of the Royal Botanic Gardens, Kew . Retrieved April 13, 2019.

Web links

Commons : Pseudotsuga macrocarpa - collection of images, videos and audio files

Pseudotsuga macrocarpa in the endangered Red List species the IUCN 2008. Posted by: Conifer Specialist Group, 1998. Retrieved on January 6 of 2009.

[WCSP-1] Rafaël Govaerts (Ed.): Pseudotsuga. In: World Checklist of Selected Plant Families (WCSP) - The Board of Trustees of the Royal Botanic Gardens, Kew . Retrieved April 13, 2019.