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| Quercus steenisii | |
| Author | Soepadmo 1966 Gard. Bull. Singapore 21: 389 |
| Synonyms | |
| Local names | |
| Range | north Sumatra
; 2000 to 3500 m; |
| Growth habit | reaches 15 m
tall; trunk to 0.6 m in diameter; |
| Leaves | 3-8 cm x 2-5; thick and coriaceous; oval-elliptic or oval-orbicular; apex rounded, emarginate; base round, obtuse or cordate; margin entire or remotely serrulate in apical half; some brownish, simple hairs above; tawny, woolly tomentose beneath, soon glabrescent; 6-10 pairs of secondary veins prominent below, flat above, straight, parallel, at an angle of 45-60° with the midrib; petiole densely pubescent, 0.2-0.5 cm long, adaxially flat; |
| Flowers | in January; male catkins 5 cm, pubescent; male flowers with pistillode replaced by a tuft of stiff, simple hairs; female inflorescence bearing 2-7 flowers; female flowers 3-4 styles 1-2 mm long, with sometimes staminodes, coriaceous perianth; |
| Fruits | acorn oval or globose, 1-2 cm in diameter, tomentose, glabrescent; stalk 1.5-3 cm long; cupule conical with 7-8 reddish brown pubescent, denticulate, spreading rings; in February; |
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Bark, twigs and |
twig
initiallyt with tawny pubescence, late-glabrescent, with lenticels; terminal
buds ovoid-ellipsoid, small; stipules linear, 5-10 mm long; |
| Hardiness zone, habitat | not hardy; mossy forests, on ridges; |
| Miscellaneous | --
-- Threatened (IUCN Red List Category : EN). |
| Subspecies and varieties |
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| Pictures |