Picea jezoensis Carrière

Yezo spruce (en), Épicéa du Japon (fr)

Species

Gymnosperms > Pinales > Pinaceae > Picea

Characteristics

Trees to 50 m tall; trunk to 1.5 m d.b.h.; bark initially brown and smooth, aging blackish brown or dull purplish gray, rough, and scaly or fissured; crown pyramidal or broadly conical; branchlets initially pale yellow, later orange-yellow or yellowish brown, glossy, glabrous or sparsely pubescent; winter buds pale brown, ovoid-conical, not resinous, scales often slightly recurved or opening at base of branchlets. Leaves directed forward on upper side of branchlets, spreading on lower side, linear, slightly recurved, flattened, 1-2(-2.4) cm × 1.5-2 mm, stomatal lines in 2 white bands adaxially, apex acute or mucronate. Seed cones green, red-or purple-brown, maturing brown or yellowish brown, oblong-cylindric or narrowly ovoid, 3-7(-9) × 2-3.5 cm. Seed scales rhombic, rhombic-elliptic, or ovate-elliptic, broadest at middle, thin, ca. 12 × 7-8 mm at middle of cones, papery, margin irregularly denticulate, apex almost truncate or rounded. Seeds ovoid-cuneate, ca. 3 × 2 mm; wing 6-10 × 4-5 mm. Pollination May-Jun, seed maturity Sep-Oct.
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A tree. It grows 50 m tall. The trunk is 1.5 m across. The bark is initially brown and smooth but becomes dark purplish grey and rough and cracked with maturity. The crown is like a pyramid. The leaves are directed forward on the upper side of the small branches. They are spreading on the lower side. They are slightly curved and flattened. They are 1-2 cm long by 1.5-2 mm wide. The seed c ones are green, red or purple brown. They are narrow and oval. They are 3-7 cm long by 2-3.5 cm wide. The seeds are oval or wedge shaped and about 3 mm by 2 mm.
Life form perennial
Growth form tree
Growth support free-standing
Foliage retention evergreen
Sexuality monoecy
Pollination anemogamy
Spread -
Mature width (meter) 1.5
Mature height (meter) 35.0
Root system -
Rooting depth (meter) 1.1
Root diameter (meter) -
Flower color -
Blooming months -
Fruit color -
Fruiting months -
Nitrogen fixer -
Photosynthetic pathway c3

Environment

It is a warm temperate plant. They grow in the mountains and river basins between 300-1700 m altitude in N China. It suits hardiness zones 8-10. In Hobart Botanical gardens.
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High mountains in N. Japan. Mountains and river basins at elevations of 300-1700 metres.
Light 7-9
Soil humidity 4-6
Soil texture 1-6
Soil acidity 1-6
Soil nutriment -
Hardiness (USDA) 2-7

Usage

Uses environmental use essential oil material medicinal timber wood
Edible barks flowers seeds shoots
Therapeutic use -
Human toxicity -
Animal toxicity -

Cultivation

Plants are grown from seed.
Mode cuttings seedlings
Germination duration (days) 30 - 60
Germination temperacture (C°) 12
Germination luminosity -
Germination treatment stratification
Minimum temperature (C°) -
Optimum temperature (C°) -
Size -
Vigor -
Productivity -

Images

Picea jezoensis unspecified picture

Distribution

Picea jezoensis world distribution map, present in China, Japan, and Korea (Democratic People's Republic of)

Conservation status

Picea jezoensis threat status: Least Concern

Identifiers

LSID urn:lsid:ipni.org:names:262669-1
WFO ID wfo-0000482440
COL ID 4HQ39
BDTFX ID 101592
INPN ID 611373
Wikipedia (EN) Link
Wikipedia (FR) Link

Synonyms

Pinus jezoensis f. microsperma Veitchia japonica Picea austromandshurica Picea jezoensis Picea microsperma Picea yezomonii Abies jezoensis Pinus jezoensis Picea manshurica Abies microsperma Pseudotsuga jezoensis Abies ajanensis Tsuga ajanensis Picea jezoensis f. kamtchatkensis Picea jezoensis var. ajanensis Picea jezoensis var. microsperma Picea jezoensis subsp. ajanensis Picea jezoensis subsp. microsperma Picea ajanensis var. microsperma Picea ajanensis var. subintegerrima Pinus firma var. jezoensis Abies firma var. jezoensis Picea ajanensis Picea kamtchatkensis Abies ajanensis Picea jezoensis var. jezoensis Abies ajanensis var. microsperma

Lower taxons

Picea jezoensis subsp. hondoensis Picea jezoensis var. komarovii Picea jezoensis subsp. jezoensis Picea jezoensis var. koreana