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A California Native American myth explains that each three-ended bract is the tail and two tiny legs of a mouse that hid inside the scales of the tree's cones during forest fires, and the tree was kind enough to be its enduring sanctuary. A Douglas-fir species, Pseudotsuga menziesii, is the state tree of Oregon.
Other studies determined that seedfall in clearcuts beyond 80 m (260 ft) from seed trees was about 3% of seedfall in uncut stands where seed trees are close together. Well-stocked stands have resulted from seedfall from sources 1–2 km (0.62–1.24 mi) distant, but most Douglas-fir seeds fall within 100 m (330 ft) of their source.
As the trees grow taller in denser forest, they lose their lower branches, such that the foliage may start as high as 34 m (110 ft) off the ground. [18] Douglas-firs in environments with more light may have branches much closer to the ground. The bark on young trees is thin, smooth, grey, and contains numerous resin blisters.
Coast Douglas-fir is the second-tallest conifer in the world (after coast redwood), and the third-tallest of all trees, (after Eucalyptus regnans).Currently, coast Douglas-fir trees 60–75 metres (197–246 ft) or more in height and 1.5–2 metres (4.9–6.6 ft) in diameter are common in old growth stands, [4] and maximum heights of 100–120 metres (330–390 ft) and diameters up to 4.5–5. ...
Pseudotsuga macrocarpa, has several features to tolerate and survive wildfire, notably the very thick bark, and the presence of numerous adventitious buds on the upper side of the branches; this enables the trees to survive even crown fires which burn off all the branchlets, the apparently dead trees becoming green again the following spring.
The pattern of branching in a tree will vary from species to species, as will the appearance of a plant as a tree, herb, or grass. Fourthly, plant morphology examines the pattern of development, the process by which structures originate and mature as a plant grows. While animals produce all the body parts they will ever have from early in their ...
The lowest branches can be observed growing 1 m (3 ft 3 in) above ground level. [4] The leaves are flat and needle-like, 1.5–3 centimetres ( 5 ⁄ 8 – 1 + 1 ⁄ 8 in) long, glaucous green above with a broad stripe of stomata , and two blue-white stomatal bands below; the fresh leaf scars are reddish (tan on the inland variety). [ 4 ]
The dead tree tops sometimes fork into new growth. [4] The bark is 5 centimetres (2 inches) thick, reddish to gray (but purple within), furrowed, and divided into slender plates. [ 4 ] The leaves are needle-like, flattened, 3–6 cm ( 1 + 1 ⁄ 8 – 2 + 3 ⁄ 8 in) long and 2 millimetres ( 3 ⁄ 32 in) wide by 0.5 mm thick, glossy dark green ...