Picea breweriana

Picea breweriana (crying spruce or weeping) - a species of spruce family of the pine family. Connecticut
Content
1 Taxonomic Notes
2 Distribution, Ecology
3 Description
4 Uses
5 Threats and Conservation
6 Links
7 Gallery
Taxonomic remarks
Grows near Picea engelmannii, but hybridization between them has not been observed. Repeated attempts at controlled pollination also did not lead to hybridization. Molecular marker-based phylogeny suggests that P. breweriana may be alone in the genus without close relatives. P. breweriana appears to be the most ancient species of the genus Picea that originated in North America.
Distribution, Ecology
Countries: United States of America (California, Oregon). Known from 6-8 places. Despite its limited distribution, P. breweriana has a wide environmental amplitude. Its obvious limitations are high groundwater and frequent fires. Spruce is quite tolerant of low temperatures, low light, poor soils and snow. Very well adapted to cope with heavy snow and ice loads. Sensitive to high evaporation. It grows in cold, wet winters and warm, relatively dry summers. Rainfall is 1000-2800 mm. Prefers to live on steep, northern slopes. Occurs on rocky ridges, cold depressions and on dry scree and moraine. Never occurs in areas where soil is saturated during the growing season, such as wetlands or wetlands. Soil pH varies from 4.6 to 7.2. Soil depth varies from 6.5 to 127 cm. Heavy metals, especially iron and nickel, can reach high levels in soil and plant tissues of spruce. P. breweriana is very shade-resistant and limited to less fertile soils due to strong competition from other conifers. It grows very slowly, usually less than 20 cm per year. Natural renewal is successful in thick fir thickets. Saplings do not survive in direct sunlight.
Description
Trees up to 40 m tall and up to 150 cm in diameter. The bark is gray to brown, thin and flaky. Buds are gray-brown, 5-7 mm, rounded at the apex. The drooping leaves develop only when the tree grows to approximately 1.5-2 m in height. Leaves 1.5-3 cm long, flattened or broadly triangular in cross section (lower leaf surface rounded or slightly angular), sufficiently rigid, lower surface leaves are dark green, the top surface is bluish, the tips are blunt (especially on old leaves). Seed cones dark red-purple, after ripening (5-7 months after pollination, in September-October) red-brown, cylindrical, length 6.5-12 (-14) cm Seeds black, 3-4 mm long, with thin , 12-18 mm long light brown wings.
Tree in English. Shasta-Trinity National Forest, California measured in 1999 had a diameter of 220 cm, height 41.8 m and 13.4 m crown. Tree in english. Trinity Alps Wilderness, California, measured in 2010, had a diameter of 249 cm and a height of 40.8 meters. Recorded maximum age is 900 years (Cowley 2000). It is a popular ornamental coniferous plant in Europe. Threats and protection
The greatest threat is the combination of changes in the regime of fire and climate, especially where fire kills the population and the climate has been changed enough to exclude successful regeneration. Most of the area is now federally owned.
Links
The Gymnosperm Database - Gallery - California Tree Tree Mountains
Belgium Garden Tree
Cones
Flowering
Weeping Branches
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Spruce species
Picea abies · Picea alcoquiana · Picea asperata · Picea brachytyla · Picea breweriana · Picea chihuahuana · Picea crassifolia · Picea engelmannii · Picea farreri · Picea glauca · Picea glehnii · Picea jezoensis · Picea koraiensis · Picea koyamae · Picea likiangensis · Picea mariana · Picea martinezii · Picea maximowiczii · Picea morrisensola · Picea moriceensola · Picea neoveitchiice Picea purpurea · Picea retroflexa · Picea rubens · Picea schrenkiana · Picea sitchensis · Picea smithiana · Picea spinulosa · Picea torano · Picea wilsonii - This is an unfinished article about the Sosnovo family.


Picea breweriana

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