Torreya nucifera Siebold & Zucc.

Japanese torreya (en), Torreya du Japon (fr)

Species

Gymnosperms > Cupressales > Taxaceae > Torreya

Characteristics

Trees to 25 m tall; trunk to 90 cm d.b.h.; bark grayish brown or light brownish red, smooth when young, fissured and peeling off in thin strips. Axis of leafy branchlets green and glabrous in 1st year, green or reddish brown and lustrous in 2nd or 3rd year. Leaves 2-ranked, linear, straight or slightly curved, 2-3 cm × 2.2-3 mm, rigid, pale green adaxially, stomatal bands 2, pale yellow, narrow, impressed, base slightly rounded or cuneate, abruptly narrowed into a short petiole, apex very long acuminate, spinose. Seed dark green when young, purplish brown at maturity, ellipsoid-obovoid or obovoid, 2.5-3.2 × 1.3-1.7 cm. Pollination Apr-May, seed maturity Oct.
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A shrub or tree. It can grow 25 m tall. The branches are spreading. The small branches are reddish-brown. The leaves are dark and glossy green above and with blue white bands underneath. The leaves have a scent when crushed. The female cones are olive green. The kernel is edible.
Life form
Growth form tree
Growth support free-standing
Foliage retention evergreen
Sexuality monoecy
Pollination anemogamy
Spread -
Mature width (meter) 10.0
Mature height (meter) 20.0
Root system -
Rooting depth (meter) 2.0
Root diameter (meter) -
Flower color -
Blooming months -
Fruit color -
Fruiting months -
Nitrogen fixer -
Photosynthetic pathway c3

Environment

Scattered in most types of mixed broad-leaved-conifer forest, often in dense shade. In old-growth forest the trees can become quite large but in areas of secondary growth they are more shrub-like; at elevations to 1,100 metres.
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It is a temperate plant. It suits hardiness zones 7-10.
Light 1-6
Soil humidity 4-6
Soil texture 1-6
Soil acidity 3-7
Soil nutriment -
Hardiness (USDA) 7-8

Usage

The kernels of the nuts are eaten. They are eaten raw or roasted and used in confectionery. An oil can be extracted from the kernels and eaten in cooking.
Uses alkaloid environmental use food food additive insect repellent material medicinal oil poison wood
Edible nuts seeds
Therapeutic use Abdomen (unspecified), Estrogenic (unspecified), Laxative (unspecified), Marasmus (unspecified), Piles (unspecified), Vermifuge (unspecified), Anodyne (unspecified)
Human toxicity -
Animal toxicity -

Cultivation

Can be grown by cuttings or seedlings.
Mode cuttings seedlings
Germination duration (days) -
Germination temperacture (C°) -
Germination luminosity -
Germination treatment -
Minimum temperature (C°) -
Optimum temperature (C°) -
Size -
Vigor -
Productivity -

Images

Torreya nucifera unspecified picture

Distribution

Torreya nucifera world distribution map, present in China

Conservation status

Torreya nucifera threat status: Least Concern

Identifiers

LSID urn:lsid:ipni.org:names:263999-1
WFO ID wfo-0000409013
COL ID 57GNP
BDTFX ID 101624
INPN ID 611613
Wikipedia (EN) Link
Wikipedia (FR) Link

Synonyms

Torreya nucifera f. sphaerica Torreya igaensis Torreya ascendens Tumion nuciferum Taxus nucifera Torreya nucifera Podocarpus nuciferus Caryotaxus nucifera Foetataxus nucifera Torreya unda Torreya macrosperma Torreya fruticosa Taxodium nuciferum Torreya nucifera var. sphaerica Torreya nucifera var. articulata Torreya nucifera var. radicans Torreya nucifera var. macrosperma Torreya nucifera var. igaensis