Quercus aliena

大槲樹

Quercus aliena Bl.

名彙資訊

特徵描述

典藏標本

數位照片

分布位置

相關資訊

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名彙資訊

學名發表文獻

Bl., Annales Museum Botanicum Lugduno-Batavi 1: 298. 1850. (Ann. Mus. Bot. Lugd.-Bat.)

台灣首次記錄發表文獻

Liu & Laio, Dendrology of Taiwan 1: 212. 1980. (Dendr. Taiwan, 樹木學)

異名

Quercus aliena Bl. var. acutiserrata Maxim. ex auct. non Wenzig

Sasaki, A Catalogue of the Government Herbarium 164. 1930. (Cat. Govern. Herb. (Formos.), 林業部腊葉館目錄)

各語言俗名

中

銳齒孛孛櫟. 孛孛櫟. 槲櫟.
英

Oriental white oak. Borbor oak.
日

こばのならがしわ.

參考資料

Yang, A list of plants in Taiwan . 1982. (List Pl. Taiwan, 台灣植物名彙)
Liu, Illustrations of native and introduced ligneous plants of Taiwan . 1961. (Ill. Nat. Intr. Lign. Pl. Taiwan, 台灣木本植物圖誌)

特徵描述

生活型

tree

形態特徵

Deciduous trees to 10 m high, trunks 0.3 m across; bark rigid, irregularly furrowed, gray; branchlets grayish brown, glabrescent, lenticellate; buds ellipsoid, scales brown, ciliate.
Leaves coriaceous, elliptic-obovate to obovate, 10–25 cm long, 5–14 cm wide, the apex obtuse to acuminate, the base cuneate to rounded, dentate, deeply green, glabrous above, grayish-white, densely stellate-hairy beneath, lateral veins 9–15-paired; petioles 0.5–2 cm long, glabrous.
Inflorescences catkins or spikes, borne on leafy flowering branchlets. Staminate catkins pendulous, 4–8 cm long; staminate perianth 6-lobed, the lobes linear; stamens 7–10. Pistillate flowers axillary,
Cupules solitary or in fascicles of 2 or 3, 2–3 mm long, 2–2.8 mm broad; imperfect ovary 2–4-celled, styles 2–4, bracts ovate-lanceolate, 2 mm long, crowded, grayish pubescent. Cupules cupulate, 0.5 cm high, 1.5 cm broad, enclosing ca. 1/3 of nut, covered with small triangular imbricate scales. Nuts ellipsoid to ovoid, about 1.5–2 cm long, 1–1.5 cm broad, hairy becoming glabrate, scar slightly raised.

物候

Flowers appearing in spring with new Leaves; fruits maturing from September to November.

分布

台灣 : found only at Fengshan near Niukoulin, Hsinchu County. Altitude is about 100 m. The population of Q. aliena is quite small (about 100–200 individuals), and form a mixed association with Q. variabilis Blume.
世界 : Widely distributed in mainland China, Korea and Japan.

引證標本

HSINCHU: Hongmao, Shimada s. n. Sep. 22, 1924 (TAIF); Fengshan near Niukoulin, Yang s. n. Oct. 14, 2002; Wu 2638. Taipei City, Taipei Botanical Garden, Chen 193 (TAIF, introduced).