Quercus mongolica Fisch. ex Ledeb.
EOL Text
Gansu, Hebei, Heilongjiang, Henan, Jilin, Liaoning, Nei Mongol, Ningxia, Qinghai, Shaanxi, Shandong, Shanxi, Sichuan [Japan, Korea, Russia]
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Trees to 30 m tall, deciduous. Branchlets purple-brown, angular, glabrous, lenticellate. Petiole 2-8 mm, glabrous; leaf blade obovate to narrowly so, (5-)7-19(-23) × (2-)3-11 cm, hairy along veins, glabrescent, base narrowly rounded to auriculate, margin with (5-)7-10 undulate to rough serrations on each side, apex truncate, shortly mucronate, or cuspidate; secondary veins (5-)10-18 on each side of midvein; tertiary veins abaxially slender, evident. Female inflorescences axillary on apical part of young shoot, 0.5-2 cm; cupules 4 or 5 but usually only 1 or 2 fertile. Perianth 6-lobed. Cupule cupular, 0.8-1.5 × 1.2-1.8(-2.8) cm, enclosing 1/3-1/2 of nut; bracts basal from cupule rim triangular-ovate, abaxial surface semiglobose tuberculate, sparsely to densely grayish pubescent; bracts at rim of cupule patent, margin fimbriate. Nut narrowly ovoid, ovoid, or ovoid-ellipsoid, (1.5-)2-2.4 × (1-)1.3-1.8(-2.3) cm, glabrous except for apex; scar 5-8(-13) mm in diam., slightly raised; stylopodium ca. 1 mm in diam. Fl. May-Jun, fr. Sep-Oct.
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Quercus crispula Blume; Q. crispula var. manschurica Koidzumi; Q. grosseserrata Blume; Q. kirinensis Nakai; Q. liaotungensis Koidzumi; Q. mongolica subsp. crispula (Blume) Menitsky; Q. mongolica var. grosseserrata (Blume) Rehder & E. H. Wilson; Q. mongolica var. kirinensis (Nakai) Kitagawa; Q. mongolica var. liaotungensis (Koidzumi) Nakai; Q. mongolica var. macrocarpa H. W. Jen & L. M. Wang; Q. mongolica var. manschurica (Koidzumi) Nakai; Q. sessiliflora Salisbury var. mongolica (Fischer ex Ledebour) Franchet; Q. wutaishanica Mayr.
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Mixed mesophytic forests; 200-2500 m.
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Barcode of Life Data Systems (BOLDS) Stats
Public Records: 0
Specimens with Barcodes: 9
Species With Barcodes: 1
Barcode of Life Data Systems (BOLDS) Stats
Public Records: 8
Specimens with Barcodes: 8
Species With Barcodes: 1
Quercus mongolica, commonly known as Mongolian oak, is a species of oak native to Japan, southern Kuriles, Sakhalin, Manchuria, Central and Northern China, Korea, eastern Mongolia, and eastern Siberia. The species can grow to be 30 m tall.[1]
Foliage
The flavono-ellagitannins mongolicin A and B can be found in Quercus mongolica var. grosseserrata.[2]
References[edit]
- ^ Chengjiu Huang, Yongtian Zhang & Bruce Bartholomew. "Quercus mongolica". Flora of China. Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA. Retrieved 2 November 2012.
- ^ Tannins and related compounds. LXXI. Isolation and characterization of mongolicins A and B, novel flavono-ellagitannins from Quercus mongolica var. grosseserrata. Ishimaru K, Ishimatsu M, Nonaka G, Mihashi K, Iwase Y and Nishioka I, Chemical and Pharmaceutical Bulletin, 1988, volume 36, number 9, pages 3312-3318
Further reading[edit]
- Ohwi, J. Flora of Japan, 1984. ISBN 978-0-87474-708-9
- Woody Plants of Japan, Vol. 1, 2000. ISBN 4-635-07003-4
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A widespread and variable species. The name Quercus wutaishanica (Q. liaotungensis) has been used for those plants from NW China that have smaller leaves and flatter cupule bracts, but these are clinal differences. In addition, many leaf forms of Q. mongolica have been recognized as varieties, but these are merely extreme cases within the variation of the species and do not warrant even varietal rank.
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