General data | Classifications | List of species | Local names | Back to home page |
Quercus subsericea | |
Author | A.Camus 1933 Bull. Soc. Bot. France 80: 354 |
Synonyms | sericea Scheff.
1870, not Willd. 1805 Cyclobalanopsis sericea (Scheff.) Schottky 1912 |
Local names | |
Range | Borneo (Sarawak);
Malaysia; Sumatra; West Java; |
Growth habit | may reach 20 m; trunk to 40 cm in diameter; |
Leaves | 4-15 x 2.5-5
cm; thin but leathery; lanceolate to oval-lanceolate, seldom oval; apex
acuminate (cuspid 0.5-1 cm long); base rounded or attenuate; margin slightly
revolute, entire or remotely serrulate near apex; hairless, shiny above;
paler beneath with scattered stellate silky tomentum, sometimes glabrous;
6-12 pairs of secondary veins, sunken above, more or less raised beneath,
curved near limb margin, forming an angle of 45-60° with the midrib;
slender petiole 1-2 cm long, sulcate above; |
Flowers | flowering irregularly;
male catkins 4-6 cm, with numerous flowers; male flowers singly to 3 together,
perianth tomentose 5-6-lobed, 5-7 stamens; female inflorescence 1-2 cm,
with 2-5 flowers, densely tomentose; pistillate flowers tomentose, ovary
ovoid or globose, 3-4 styles 1 mm long; |
Fruits | acorn ovoid,
conical or subglobose, 1-2 cm long, silky, apiculate; base rounded; cup
flat, pubescent, 5-6 concentric, denticulate, silky rings, with thin wall; |
Bark, twigs and |
bark
grey brown, fissured or scaly; twig initially densely tomentose, glabrescent,
minutely lenticellate; terminal buds ovoid to subglobose, tomentose, 3-4
mm long; stipules linear, acute, 5-7 mm long; |
Hardiness zone, habitat | not
hardy; |
Miscellaneous | -- A. Camus : tome 1, p. 366,
n° 86; -- Sub-genus Cerris, Section Cyclobalanopsis; -- Section Oidocarpa, sub-section Oidocarpae (Menitsky). -- Closely related to Q.oidocarpa; |
Subspecies and varieties |
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Pictures |