WorldFloraDB - Quercus spinosa

Characteristics

Trees 6-10(-20) m tall, evergreen. Young branchlets with yellowish brown stellate hairs, glabrescent. Petiole 1-3 mm; leaf blade obovate to elliptic, 2.5-7(-16) × 1.5-4 cm, rugose or smooth, with glandular simple and fascicled hairs when young, abaxially glabrescent but often some hairs remaining on base of midvein, adaxially glabrescent, base rounded to cordate, margin with spiniform teeth or entire, apex rounded to obtuse (sometimes acute to acuminate in Taiwan); midvein and secondary veins adaxially impressed; midvein flexuous; secondary veins 4-8 on each side of midvein; tertiary veins abaxially evident. Female inflorescences 1-3 cm. Cupule cupular, 4-9 × 7-15 mm, enclosing 1/4-1/2 of nut; bracts triangular to triangular-ovate, 1-1.5 mm, crowded, gray pubescent except for apex. Nut ovoid to ellipsoid, 1.2-2 × 0.7-1.3 cm; scar ca. 5 mm in diam.; stylopodium ca. 1 mm in diam. Fl. May-Aug, fr. Sep-Dec of following year.

More

A shrub or small tree. It keeps its leaves throughout the year. It grows 15 m high. The small branches are purplish-brown. The leaves are broadly oval. They are 3-5 cm long by 1-3 cm wide. There can be small spiny teeth. There can be 1-2 acorns in a group. They are in a cup. The nuts are obong and 1.5 cm long by 1 cm wide.

Life form

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Growth form

tree

Growth support

free-standing

Foliage retention

evergreen

Sexuality

monoecy

Pollination

-

Spread

-

Mature width (meter)

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Mature height (meter)

10.5 - 12.5

Root system

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Rooting depth (meter)

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Root diameter (meter)

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Flower color

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Blooming months

Jan	Feb	Mar
Apr	May	Jun
Jul	Aug	Sep
Oct	Nov	Dec

Fruit color

-

Fruiting months

Jan	Feb	Mar
Apr	May	Jun
Jul	Aug	Sep
Oct	Nov	Dec

Nitrogen fixer

-

Photosynthetic pathway

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Environment

It is a temperate plant. It grows in southern China on rocky limestone hillside between 1,000-2,500 m altitude.

Light	-
Soil humidity	-
Soil texture	-
Soil acidity	-
Soil nutriment	-
Hardiness (USDA)

Usage

Starch is extracted from the nuts are used as food.

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

Cultivation

Mode	-
Germination duration (days)	120 - 365
Germination temperacture (C°)	10
Germination luminosity	-
Germination treatment	-
Minimum temperature (C°)	-
Optimum temperature (C°)	-
Size	-
Vigor	-
Productivity	-