Quercus steenisii Soepadmo

Species

Angiosperms > Fagales > Fagaceae > Quercus

Characteristics

Tree, c. 15 m, c. 60 cm ø. Branchlets initially densely brownish stiff-pubescent, late glabrescent, lenticellate; terminal buds ovoid-ellipsoid, 1-1½ by ½ cm. Stipules linear, 5-10 by 1-2 mm. Leaves thick-coriaceous, ovate-elliptic or ovate-orbicular, 3-8 by 2-5 cm; base rounded, obtuse, or cordate, top rounded, emarginate or bluntly acute; margin entire or remotely serrulate in the apical half; above with some brownish, stiff simple hairs, glabrescent, beneath brownish, woolly tomentose, soon glabrescent; midrib and nerves prominent beneath, keeled or flattened above; nerves 6-10 pairs, straight, parallel, arcuating towards the margin, at an angle of 45-60°; reticulation scalariform, prominent beneath, dense; petiole 2-5 mm long, adaxially flat. Male rachis 5 cm; bracts ovate-obtuse, c. 2 by 1 mm, densely pubescent; ♂ flowers: filaments 1-1.3 mm long, anthers c. 1 by ½ mm, pistillode replaced by a tuft of stiff, simple hairs. Young infructescence 1½-3 cm, sparsely lenticel-late, carrying 2-7 young fruits; bracts ovate-acute; perianth thick-coriaceous, staminodes 0-6, rudimentary, styles recurved, 1-2 mm long. Young cupule ovoid-globose, densely pubescent; lamellae thick, 3-4, the 2 lower ones denticulate, the others entire. Ripe cupule cup-shaped, obconical, or patelliform, 0.7-1 cm high, 1.2-2½ cm ø, enclosing ⅓-¼ part of the fruit; lamellae 7-8, ± recurved, densely brownish pubescent. Fruit globose or ovoid, densely brownish tomentose, glabrescent, 1-2 cm through; top rounded-or depressed-umbonate, base convex or flat.
Life form -
Growth form tree
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Foliage retention evergreen
Sexuality monoecy
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Environment

Mossy forest on ridges, 2000-3350 m. Fl.--01, fr.--02.
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Usage

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Edible -
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Cultivation

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Germination duration (days) 120 - 365
Germination temperacture (C°) 10
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Distribution

Quercus steenisii world distribution map, present in Indonesia

Conservation status

Quercus steenisii threat status: Endangered

Identifiers

LSID urn:lsid:ipni.org:names:360115-1
WFO ID wfo-0000293371
COL ID 4R664
BDTFX ID -
INPN ID -
Wikipedia (EN)
Wikipedia (FR)

Synonyms

Quercus steenisii