| Quercus quangtriensis | |
| Author | Hickel & A.Camus 1926 Bull. Mus. Natl. Hist. Nat. 32: 400 |
| Synonyms | platycalyx Hickel
& A.Camus 1921 Ann. Sci. Nat., Bot. X, 3: 380 (A. Camus : n°
2) |
| Local names | |
| Range | Vietnam; Thailand;
to 700 m; |
| Growth habit | 20-25 m; trunk
to 1 m in diameter; |
| Leaves | 7-12 x 2-3 cm;
thick, stiff; oblong; apex pointed acuminate; base cuneate; margin thick,
toothed towards apical 2/3; glabrous on both sides; 8-11 pairs of secondary
veins slightly raised underside, at an angle of 35-40° with midvein;
petiole 1.5 cm long; |
| Flowers | female flowers
with 4 free styles; |
| Fruits | acorn 2-3.5
cm long, 1.5-2 cm in diameter; sometimes asymmetrically mucronate, with
convex basal scar; enclosed 1/4 by the stalkless cup; cup flat or nearly
so, 2-2.8 cm in diameter; 8-9 concentric rings, grey, finely pubescent,
remotely dentate; maturing first year; |
|
Bark, twigs and |
young shoot hairless; small bud; |
| Hardiness zone, habitat | not
hardy; tropical forests; prefers clay soil; |
| Miscellaneous | --
Sub-genus Cerris, Section Cyclobalanopsis; -- Section Semiserrata, sub-section Gemelliflorae (Menitsky). -- A. Camus : tome 1, p. 291, n° 49; -- Threatened (IUCN Red List Category : VU). -- Since 2007, Q. platycalyx is considered by Govaerts as a true species, in Vietnam; |
| Subspecies and varieties |
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| Pictures |
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