| Quercus gemelliflora | |
| Author | Blume 1825 Verh. Batav. Genootsch. Kunsten 9: 222 |
| Synonyms | Cyclobalanopsis
gemelliflora (Bl.) Oerst. 1867 crassilamellata (Gamble) A.Camus 1931 (A. Camus : n° 21) horsfieldii MiQ.1856 lineata var. merkusii (Endl.)Wenzig 1886 merkusii Endl. 1848 semiserrata var. mannii Hook.f. 1888 turbinata Bl. 1826 (A. Camus = n° 12) turbinata var. crassilamellata Gamble 1915 |
| Local names | |
| Range | Borneo, Java,
Sumatra, W Malaysia; |
| Growth habit | tall tree 30
m and more; |
| Leaves | 7-20 x 3-6 cm;
thin, chartaceous; elliptic or lanceolate or oblanceolate or oboval; apex
acute, acuminate or caudate; base acute or attenuate, often asymmetrical;
margin plane, serrulate towards apical 1/2; glabrous above; glabrescent
beneath; 8-10 pairs of secondary veins weakly raised below, forming an
angle of 45-60° with the midrib; petiole tomentose 1-4 cm long, flat
above, glabrescent; |
| Flowers | male catkins
many-flowered, 3-6 cm long, hairy ; male flowers single or to 3, perianth
3-6-lobed, hairy, 3-6 stamens; female inflorescence 2-7-flowered, perianth
4-6-lobed, hairy, 0-6 staminodes, 4-6 styles 1-2 mm long; |
| Fruits | acorn conical, 2-5 cm long, with obtuse apex and rounded base; most often paired along rachis; subsessile or on a short peduncle; cup enclosing 1/3 to 1/2 of nut, with 6-8 brownish, pubescent, denticulate rings; |
|
Bark, twigs and |
greyish
brown bark, smooth or finely fissured; young shoot pubescent becoming
hairless; |
| Hardiness zone, habitat | not
hardy; wet mixed forests; |
| Miscellaneous | -- Sub-genus Cerris, Section
Cyclobalanopsis; -- Section Semiserrata, sub-section Gemelliflorae (Menitsky). -- Strongly variable species (shape of leaves, pubescence of twigs, acorn); |
| Subspecies and varieties |
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| Pictures |
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