Douglas-fir

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Douglas-fir

[¦dəg·ləs ′fər]
(botany)
Pseudotsuga menziesii. A large coniferous tree in the order Pinales; cones are characterized by bracts extending beyond the scales. Also known as red fir.
References in periodicals archive ?
taxifolia) (Douglas-fir, Douglasfir) Psiadiapunctulata Asteraceae/Compo Whole plant (DC) Vatke sitae (daisy family) Ptaeroxylon obliquum Ptaeroxylaceae Radlk Ranunculus Ranunculaceae Fruit multifidus Forsk.
Western Hemlock zones, often co-dominated by Douglasfir (Pseudotsuga menziesii) in areas with a history of fire, are also wet (150-300 cm annual precipitation), somewhat cooler (7-10[degrees]C), but with drier summers (6-9% of total precipitation).
In Florida, yellow cedar, western red cedar, eastern white cedar, western larch, and tamarack all showed similar performance, whereas Douglasfir decayed substantially faster.
Comparison of Douglasfir site index and height growth curves in the Pacific Northwest.
Douglasfir (Pseudotsuga menziesii) and bigleaf maple (Acer macrophyllum) are the dominant trees with the presence of grand fir (Abies grandis), western hemlock (Tsuga heterophylla) and western redcedar (Thuja plicata) (Akay et al.
Contrasting microclimates among clearcut, edge, and interior old-growth Douglasfir forest.
25 ha, and each was severely infested with Douglasfir dwarf mistletoe; however, the severity of the infestations of dwarf mistletoe was not evaluated.