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Quercus donnaiensis | |
Author |
A. Camus 1935 Chênes Atlas 2: 119 |
Synonyms | |
Local names | |
Range | Vietnam (Province du Haut-Donnaï); 1000-1700 m; |
Growth habit | 25 m; |
Leaves |
10-16 cm x 4-5; oval-lanceolate; base attenuate; apex long acuminate; margin not undulate, with scattered teeth in upper 1/3; densely tomentose at first, becoming hairless adaxially; abaxially glabrous or with a persistent tomentum along midrib; slightly glaucous; midrib nearly flat above, prominent beneath; 9-14 pairs of secondary veins, at an angle of 60° from midrib; tertiary veins not visible; petiole tomentose 1-2 cm long; |
Flowers | males catkins appear after the female ones; female catkins 2.5 cm long, with yellowish tomentose rachis, bearing 5-6 tomentose flowers; 4 styles; stigmas thick, dark; |
Fruits |
acorn subglobose 1.5-1.7 cm long x 1.2 cm wide, loosely pubescent, rounded at tip, 4 to 5 together on a slim rachis 7-8 cm long; basal scar convex; cupule halfround 1.5 cm in diameter, with 5-6 concentric rings of nearly entire scales, enclosing 1/2 of the nut; maturing in 2 years. |
Bark, twigs and |
young twigs densely golden tomentose, woolly, becoming glabrous, dark brown; bud ovoid-rounded with scales oval silky outside; stipule linear, tomentose; |
Hardiness zone, habitat | low montane broadleaf evergreen forests; |
Miscellaneous |
-- Camus n° 5;
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Subspecies and varieties |
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Pictures |