(Pseudotsuga menziesii (Mirb.) Franco)
Habitus
- a massive tree grows to a height of 60 – 100 m in the homeland
- the crown is conical to broadly conical
- bark is smooth greenish-gray to brownish-gray with many resin vesicles
- the bark is deeply split into longitudinal wide plates with striking yellow cork strips
Buds
- buds are 10 x 5 mm large, spindle-shaped, sharply pointed, brown-red
Shoots
- shoots are yellow-green to reddish-yellow
Leaves (assimilation organs)
- assimilation organs needle-like
- 18 - 30 x 1-2 mm needles large, narrowly linear, flat, blunt-ended
- on the upper side dark green shiny
- on the underside matte with with two bands of whitish stomata
- last up to 8 years
- smell pleasantly of lemon when rubbed
Flowers
- monoecious wood flowers of different sexes
- blooms IV – V
- ♂ cones are oblong ovoid, orange-yellow 10 - 15 x 5 - 6 mm large
- ♀ cones are oblong-ovoid, green to reddish with long three-pointed supporting scales
Fruits – seeds
- fruit is a cone 5 - 10 x 3-4 cm large, oblong-ovoid, brown, non-decomposable with long three-pointed supporting scales:
- yew-leaved oduglaska - green (Pseudotsuga menziesii subsp . viridis) - the supporting scales go directly to the top of the pinecone
- gray yew (Pseudotsuga menziesii, subsp. glauca) - the supporting scales with the tip almost stick out perpendicularly from the pinecone, or are bent up to the base of the pinecone
- seed is 5 - 7 x 4 mm large, egg-shaped, triangular, compressed, worm-brown, membranous wing about 15 mm long firmly attached to the seed.
Extension
- Douglas yew - gray (Pseudotsuga menziesii - subsp. glauca) – Rocky hills from 2,000 - 3,000 m above sea level.
- Douglas yew - green (Pseudotsuga menziesii - subsp. viridis) - western part of North America - coast of the Pacific Ocean, in the Sierra Nevada rises to 2,000-2,600 m above sea level. , forms extensive homogeneous stands, but also mixed with hemlock (Tsuga heterophylla), thuja ciliate (Thuja plicata), giant fir (Abies grandis), heavy pine (Pinus ponderosa) and others, it grows here to enormous dimensions - up to a height 110 m (after the sequoia, the tallest tree in North America)
Ecology
- semi-light-loving tree of the oceanic climate, it grows quickly, deep, wetter, aerated soils are suitable for it
Significance
- due to its fast growth, it is used in forestry as a production wood, the wood is similar to the wood of deciduous larch
- grows in parks
- creates various decorative forms – columnar, mournful, low with different colored needles
