Lithocarpus irwinii Rehder

Species

Angiosperms > Fagales > Fagaceae > Lithocarpus

Characteristics

Trees ca. 10 m tall. Young branchlets sulcate, densely tawny pilose, glabrescent; lenticels raised. Petiole usually less than 1 cm; leaf blade elliptic to lanceolate, 7-12 × 2-4 cm, thickly and rigidly leathery, abaxially with reddish brown, scurfy, waxy scalelike trichomes and when young sparsely pilose on midvein, adaxially dark brown and often oily when dry, base cuneate and decurrent on petiole, margin entire or undulate from middle to apex and ± recurved, apex acute to acuminate; secondary veins 10-15 on each side of midvein; tertiary veins abaxially very slender, evident to inconspicuous. Male inflorescences solitary in axils of leaves, or 2 or 3 in panicles; rachis tawny pubescent. Female inflorescence with cupules in clusters of ca. 3, sometimes solitary. Infructescences 2-5 cm; rachis 5-8 mm thick. Cupule turbinate, 2-2.6 × 1.8-2.4 cm, completely enclosing nut, apically broadest and ± flat, wall 2-4 mm thick; bracts imbricate, triangular, center and margin thickened in ridges. Nut subglobose, ca. 1.5 cm in diam., densely covered with appressed minute hairs, wall 2-2.5 mm thick; scar covering ca. 1/4 of nut, convex. Fl. Apr-May, fr. Oct-Nov of following year.
Life form -
Growth form tree
Growth support free-standing
Foliage retention evergreen
Sexuality monoecy
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Mature height (meter) 10.0
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JanFebMar
AprMayJun
JulAugSep
OctNovDec
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JanFebMar
AprMayJun
JulAugSep
OctNovDec
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Environment

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Usage

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Edible -
Therapeutic use -
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Cultivation

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Distribution

Lithocarpus irwinii world distribution map, present in China

Identifiers

LSID urn:lsid:ipni.org:names:358804-1
WFO ID wfo-0000229986
COL ID 3VJWR
BDTFX ID -
INPN ID -
Wikipedia (EN)
Wikipedia (FR)

Synonyms

Lithocarpus irwinii Quercus irwinii Synaedrys irwinii Pasania irwinii Lithocarpus amygdalifolius var. praecipitorum