| Quercus augustinii | |
| Author | Skan 1899 J. Linn. Soc., Bot. 25: 507 1899. |
| Synonyms | Cyclobalanopsis augustinii (Skan)
Schottky 1912 augustinii var. angustifolia A.Camus 1933 augustinii var. rockiana A.Camus 1935 augustinii var. genuina A.Camus 1935 nom. inval. glabricupula Barnett 1938 Pasania chiwui Hu |
| Local names | zhai
ye qing gang ; |
| Range | China (Yunnan, Guizhou, Guangxi) ; Vietnam ; Northeast Myanmar; Thailand ; from 1200 m to 2700 m; |
| Growth habit | 1.5-3 m, but reaches sometimes 10 m; |
| Leaves | 7-12 cm long,
1-4 cm wide; evergreen; oval-lanceolate to elliptic-lanceolate; apex acuminate,
base cuneate and oblique; margin mostly entire, or more or less slightly
toothed near apex; glabrous, shiny above; somewhat farinose or glaucescent,
glaucous below; midrib not impressed above; 10-15 pairs of secondary veins;
petiole glabrous, 0.5-2 cm long; |
| Flowers | pistillate inflorescences
solitary, 3-4 cm long, at axils of young shoots with 5-10 flowers ; flowers
in April-May; 3 styles; |
| Fruits | acorn oblong-ovoid, 1-1.7 cm long, 0.8-1.2 cm wide, glabrous, apically rounded and sometimes depressed; enclosed for 1/2 in cupule; cupule 0.6-1 cm long, 1-1.3 cm wide, outside glabrous or nearly so, sericeous inside, with 5-7 concentric rings entire or crenate; scar slightly convex; stylopodium persistent; maturing in 2 years; |
|
Bark, twigs and |
dark grey bark; twigs sulcate, orangish brown at first, becoming glabrous; |
| Hardiness zone, habitat | not
quite hardy; all types of soils; cultivated in Great Britain; |
| Miscellaneous | --
A. Camus : tome 1, p. 230, n° 23; -- Section Cyclobalanoides (Menitsky). -- Also written "augustini" ; |
| Subspecies and varieties |
-- Cyclobalanopsis augustinii
var. negrinux (Hu)
M.Deng & Z.K.Zhou 2005 comb. nov. = Cyclobalanopsis nigrinux and Q. augustini are very close and differ only in having leaves thinner, brown and smooth beneath, neither farinose nor glaucescent in nigrinux, whereas augustini has farinose or glaucescent leaf-undersides. So C. nigrinux may be considered as a variety of Q. augustini; |
| Pictures |
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