Taxus cuspidata Siebold & Zucc.

Japanese yew (en), If du japon (fr), If du Japon (fr)

Species

Gymnosperms > Cupressales > Taxaceae > Taxus

Characteristics

Trees to 20 m tall; trunk to 1-1.5 m d.b.h.; bark reddish brown, with shallow fissures; winter bud scales persistent at base of branchlets, overlapping, ridged dorsally, tapered apically.Leafy branchlets "V"-shaped in cross section in living state. Leaves borne at 75-95° to branchlet axis, subsessile; blade dark green and glossy adaxially, linear, almost equally widethroughout length, slightly falcate, 1-2.5(-4) cm × 2.5-3 mm, midvein not papillate abaxially, stomatal bands tawny yellow, 0.6-0.7 mm wide, at least 2 × as wide as marginal bands,marginal bands ca. 0.2 mm wide, base cuneate, ± asymmetric, margin revolute, apex usually shortly mucronate, mucro 0.1-0.3 mm. Pollen cones ovoid or subglobose, ca. 3.5 mm;peduncle 0.5-1 mm; microsporophylls 9-14, each with 5-8 pollen sacs. Aril purplish red when ripe, lustrous. Seed ovoid or trigonous-ovoid, ca. 6 × 4-4.5 mm, distally with 3 or 4 or moreobtuse ridges, apex with small, obtuse mucro; hilum usually triangular or quadrangular. Pollination spring, seed maturity autumn.
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A small evergreen tree. It grows 15 m high and spreads 6 m wide. The leaves are like needles and are single and keeled. They are sickle shaped. They tend to radiate out from the twigs. They are pale green above and have 2 yellowish-green bands underneath. The bud scales are triangle shaped. The pollen cones are small and in amongst the leaves. The fruit are small red berries.
Occasionally escape locally from cult.
Life form perennial
Growth form tree
Growth support free-standing
Foliage retention evergreen
Sexuality dioecy
Pollination anemogamy
Spread -
Mature width (meter) 2.5 - 4.0
Mature height (meter) 10.0
Root system fibrous-root
Rooting depth (meter) 1.0
Root diameter (meter) -
Flower color
Blooming months
JanFebMar
AprMayJun
JulAugSep
OctNovDec
Fruit color
Fruiting months
JanFebMar
AprMayJun
JulAugSep
OctNovDec
Nitrogen fixer -
Photosynthetic pathway c3

Environment

Occasional in mixed conifer and conifer-deciduous forests in lowland to lower montane regions; at elevations from 100-1,600 metres. The var nana is found mainly on rocky sea coasts, sometimes also on exposed rock outcrops in the interior.
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It is a temperate plant. They are hardy. It will grow in most alkaline soils. It needs an open, sunny position. It is resistant to drought. It suits hardiness zones 4-9. Hobart Botanical gardens.
Light 2-7
Soil humidity 3-6
Soil texture 1-6
Soil acidity 2-8
Soil nutriment -
Hardiness (USDA) 5-8

Usage

CAUTION: The seeds are poisonous and tea from the leaves is poisonous. The sweet aril or ripe fruit pulp is eaten raw or made into jam or brewed into wine.
Uses dye environmental use fiber material medicinal oil poison reforestation species tea wood
Edible fruits seeds
Therapeutic use Cyanogenetic (unspecified), Diuretic (unspecified), Emmenagogue (unspecified), Poison (unspecified)
Human toxicity -
Animal toxicity -

Cultivation

Plants can be grown from seed.
Mode cuttings seedlings
Germination duration (days) 365
Germination temperacture (C°) 21
Germination luminosity -
Germination treatment -
Minimum temperature (C°) -
Optimum temperature (C°) -
Size -
Vigor -
Productivity -

Images

Leaf

Taxus cuspidata leaf picture by 道草 (cc-by-sa)

Distribution

Taxus cuspidata world distribution map, present in China, Korea (Democratic People's Republic of), and United States of America

Conservation status

Taxus cuspidata threat status: Least Concern

Identifiers

LSID urn:lsid:ipni.org:names:324379-2
WFO ID wfo-0000408609
COL ID 55284
BDTFX ID 119736
INPN ID 717663
Wikipedia (EN) Link
Wikipedia (FR) Link

Synonyms

Taxus cuspidata Taxus umbraculifera Taxus biternata Cephalotaxus umbraculifera Taxus cuspidata f. minima Taxus cuspidata f. aurescens Taxus cuspidata f. luteobaccata Taxus cuspidata f. fructu-luteo Taxus caespitosa Taxus cuspidata var. caespitosa Taxus baccata var. latifolia Taxus baccata subsp. cuspidata Taxus cuspidata var. densa Taxus cuspidata var. latifolia Taxus baccata var. microcarpa Taxus umbraculifera var. microcarpa Taxus baccata var. cuspidata Taxus cuspidata var. microcarpa Taxus cuspidata var. umbraculifera Taxus cuspidata var. minima Taxus cuspidata var. luteobaccata Taxus cuspidata subsp. biternata Taxus caespitosa var. latifolia Taxus cuspidata f. thayerae Taxus cuspidata f. densa

Lower taxons

Taxus cuspidata var. nana Taxus cuspidata var. cuspidata