Amentotaxus formosana H.L.Li

Taiwan catkin yew (en)

Species

Gymnosperms > Cupressales > Taxaceae > Amentotaxus

Characteristics

Trees to 10 m tall; trunk to 3 cm d.b.h.; main branches few. Leafy branchlets broadly ovate-rectangular in outline, (2.5-)7-12 × 14-18 cm, axis green in 1st and 2nd years, becoming brown striped in 3rd year, quadrangular or subterete. Leaves borne at 55-70° to branchlet axis, subsessile; petiole (if present) thick, to 1 mm; blade dark green adaxially, lanceolate or linear-lanceolate, usually slightly but distinctly falcate, 5-8.5 cm × 5-10 mm, leathery, midvein 1-1.5 mm wide abaxially, with a narrow, green band ca. 0.5 mm wide on either side, stomatal bands white, ca. 2 mm wide, very dense (ca. 30 rows), ca. 2 × as wide as marginal bands, marginal bands 0.6-1.6 mm wide, base broadly cuneate or obtuse, margin revolute, apex long acuminate. Pollen-cone racemes borne (1-)3 or 4(or 5) together, ca. 3 cm; cones in 7-9 pairs, close together, subsessile (peduncle less than 1 mm), subglobose; bracts usually 7(-11) in 2-4 rows, keeled distal ones ca. 15 × 5 mm; microsporophylls ca. 10, 1.5-2 cm, recurved at maturity, each with 5-8 pollen sacs. Aril reddish yellow when ripe. Seed finally reddish purple, obovoid-ellipsoid, 2-2.5 × 0.9-1.1 cm, apex mucronulate; peduncle 1.5-2 cm, recurved at maturity; 2 rows of basal scales persistent. Pollination Feb, seed maturity Dec.
Life form annual
Growth form tree
Growth support free-standing
Foliage retention evergreen
Sexuality dioecy
Pollination anemogamy
Spread -
Mature width (meter) -
Mature height (meter) 8.0
Root system -
Rooting depth (meter) -
Root diameter (meter) -
Flower color -
Blooming months -
Fruit color -
Fruiting months -
Nitrogen fixer -
Photosynthetic pathway c3

Environment

An understorey tree in montane evergreen tropical rainforest and broad-leaved subtropical forest, usually found on steep slopes, in ravines, or on cliffs; at elevations from 900-1,300 metres, occasionally descending to 500 metres.
More
An understorey tree in montane evergreen tropical rainforest and broad-leaved subtropical forest, usually found on steep slopes, in ravines, or on cliffs; at elevations from 900-1,300 metres, occasionally descending to 500 metres.
Light -
Soil humidity -
Soil texture -
Soil acidity -
Soil nutriment -
Hardiness (USDA) -

Usage

Uses medicinal wood
Edible -
Therapeutic use -
Human toxicity -
Animal toxicity -

Cultivation

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

Images

Amentotaxus formosana unspecified picture

Distribution

Amentotaxus formosana world distribution map, present in China

Conservation status

Amentotaxus formosana threat status: Vulnerable

Identifiers

LSID urn:lsid:ipni.org:names:828262-1
WFO ID wfo-0000530838
COL ID CR22
BDTFX ID -
INPN ID -
Wikipedia (EN) Link
Wikipedia (FR)

Synonyms

Amentotaxus formosana Amentotaxus yunnanensis var. formosana