Search results
Results from the WOW.Com Content Network
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.
Close-up view of Fraser fir foliage. Abies fraseri is a small evergreen coniferous tree typically growing between 30 and 50 ft (10 and 20 m) tall, but rarely to 80 ft (20 m), with a trunk diameter of 16–20 in (41–51 cm), but rarely 30 in (80 cm).
Firs are evergreen coniferous trees belonging to the genus Abies (Latin:) in the family Pinaceae. There are approximately 48–65 [3] [4] extant species, found on mountains throughout much of North and Central America, Eurasia, and North Africa. The genus is most closely related to Keteleeria, a small genus confined to eastern Asia. [5]
Pseudotsuga / ˌ sj uː d oʊ ˈ t s uː ɡ ə / [1] is a genus of evergreen coniferous trees in the family Pinaceae (subfamily Laricoideae).Common names for species in the genus include Douglas fir, Douglas-fir, Douglas tree, Oregon pine and Bigcone spruce.
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 ...
The bark on young trees is smooth, grey, and with resin blisters (which tend to spray when ruptured), becoming rough and fissured or scaly on old trees. The leaves are flat and needle-like, 15 to 30 mm ( 5 ⁄ 8 to 1 + 1 ⁄ 8 in) long, dark green above often with a small patch of stomata near the tip, and two white stomatal bands below, and a ...
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 ...
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.