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Quercus dentata

槲樹

Quercus dentata Thunb. ex Murray
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名彙資訊

學名發表文獻

Thunb. ex Murray, Systemat Vegetabilium. Editio decima quarta 858. 1784.  (Syst. Veg. (ed. 14))

台灣首次記錄發表文獻

Matsum. & Hayata, Enumeratio Plantarum Formosanarum 393. 1906.  (Enum. Pl. Formos.)

異名

各語言俗名

  • 槲櫟. 柞櫟.
  • Daimyo oak.
  • かしわ.

參考資料

  • Yang, A list of plants in Taiwan . 1982.  (List Pl. Taiwan, 台灣植物名彙)

特徵描述

生活型

tree

形態特徵

  • Deciduous tree to 17 m high, with trunks 0.6 m across; bark blackish, furrowed; branches grayish-brown; young branchlets light golden-brown hairy; buds ovoid.
  • Leaves obovate, 13–25 cm long, 8.5–17 cm broad, obtuse at apex, auriculate, rounded to cuneate at base, with 6–10 wavy lobes on each side, soft-stellate hairy on both sides at first, becoming glabrous above, lateral veins 8–12 pairs; petioles very short to 0.3–0.9 cm long, densely gray-hairy.
  • Staminate inflorescence catkins, pendulous, ca. 9 cm long; staminate flowers 2.5 mm long, 2.5 mm broad, yellowish; perianth 5–6-lobed, lanceolate, hairy outside; stamens 6–8 (4–11), the filaments 1.3–1.5 mm long, anthers 1 mm long, connectives sparsely long-hairy. Pistillate flowers very short-peduncled; perianth 5–7-lobed, triangular, enclosed in involucre, styles 3, stigmas enlarged, truncate.
  • Cupules cup-like, scales numerous, brownish, flat, imbricate, lanceolate, somewhat spreading, recurved, tomentose; nuts ellipsoid, 1.5–2 cm long, 1.2–1.5 cm broad, brownish.

物候

Staminate flowers appearing with new Leaves from March to May; fruits maturing from October to November.

分布

  • 台灣 : found in the central part at altitudes of 300–1000 m (Hsinshe and Tungshih, Taichung) and southern part at 800–1,600 m (Yichangshan, Lanwulushan and Shenchihshan, 5–10 km east of Wutai, Pingtung). Q. dentata usually forms pure stands on the ridges
  • 世界 : Widely distributed in E Asia, including China (from south to north), Mongolia, Korea and Japan .

引證標本

TAICHUNG: Tungshih, Kawakami & Nakahara 804; Mt. Pashien, Sasaki 36667; Shintsuang, Kawakami & Shimada 32; Tanankun, Kawakami & Mori 1220; Hsinshe, Liao 13100, Chuong 262.

引用文獻

典藏標本

共有 7 份典藏標本

    275530
    鄭淑芬 Shu-Fen Cheng
    台中 Taichung
    279318
    郭城孟 Chen-Meng Kuo
    台中 Taichung
    115666
    H.Suzuki
    台中 Taichung
    036667
    佐佐木舜一 S.Sasaki
    台中 Taichung
    115665
    H.Suzuki
    台中 Taichung
    036668
    川上瀧彌 T.Kawakami, 中原源治 G.Nakahara
    台中 Taichung
    036673

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