Cyclobalanopsis salicina

白背櫟

Cyclobalanopsis salicina (Bl.) Oerst.

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

Orest., Videnskabelige Meddelelser fra Dansk Naturhistorisk Forening I Kjøbenhavn 18: 78. 1866. (Kjoeb. Vidensk. Medd.)

台灣首次記錄發表文獻

Liao, Quarterly journal (Bulletin) of the experimental forest of National Taiwan University 1(1): 80. fig. 2. 1987. (Quart. J. Exp. For. Natl. Taiwan Univ., 國立台灣大學農學院實驗林硏究報告)

異名

Cyclobalanopsis angustissima (Makino) Kudo & Masam. ex Kudo

Kudo & Masam. ex Kudo, Transactions of the Natural History Society of Formosa 20: 161. 1930. (Trans. Nat. Hist. Soc. Formos., 台灣博物學會會報)
Cyclobalanopsis stenophylloides (Hayata) Kudo & Masam. ex auct. non Kudo

Nakai, Journal of Japanese Botany 15: 203. 1939. (J. Jpn. Bot., 植物硏究雑誌)
Quercus stenophylloides auct. non Hayata

Nakai, Journal of Japanese Botany 15: 203. 1939. (J. Jpn. Bot., 植物硏究雑誌)
Quercus salicina Bl.

Liao, Memoirs of the College of Agriculture, National Taiwan University 11(2): tantum. pl. 12. 1970. (Mem. Coll. Agr. Natl. Taiwan Univ., 國立台灣大學農學院硏究報告)

各語言俗名

無

特徵描述

生活型

tree

形態特徵

Evergreen trees up to 30 m high, 1 m across; trunk straight; young branchlets grayish-white with light brown short hairs, later glabrous, with numerous lenticels.
Leaves alternate, lanceolate, oblong to oblong-lanceolate, 10–15 cm long, 3–5 cm wide, thin-coriaceous, caudate to acute at apex, acute to obtuse at base, sharply serrate from middle to the apex along margins, lateral veins 8–13 pairs, lustrous above, waxy-white beneath; petioles 1–2.5 cm long, glabrous; young Leaves with densely short light brown hairs, later glabrous.
Staminate caktins 6–9 cm long, sprouting from base of young branchlet; peduncles brown-hairy, pendulous; Staminate flowers yellow; perianth 3–4-lobed, broadly ovate; stamens 4–6. Pistillate spikes short, 3–4-flowered, sprouting from young branchlets; pistillate flowers enclosed in an involucre, 1.5 mm long, with 1 bract and 2 bracteoles, styles 3, stigmas enlarged, recurved.
Cupules cup-like, grayish-brown, scales in 5–6(–7) concentric rings, with dense light grayish-brown hairs, margins serrulate;nuts broadly ellipsoid to broadly ovate-ellipsoid, 1.5–1.8 cm long, 1–1.3 cm wide, deep brown above.

物候

fruit maturing from November.

分布

台灣 : Taiwan, on ridges at altitude of about 500 m in the northern and southern parts of the island (including Huantitien, Mt. Luchangtashan, Mt. Tawu, Chinshuiying).
世界 : Distributed in the central and southern parts of Japan, the Ryukyus and southern Korea.