(12) 嶺南槭
Acer tutcheri Duthie
槭樹科(Aceraceae)

英文名 (English name): Tutcher's Maple

中國境內現狀：需予關注(LC)
Status in China: Least Concern (LC)

形態特徵: 落葉喬木，高5-10米；樹皮褐色；小枝纖細，無毛。葉紙質，輪廓闊卵形，長6-7厘米，寬8-11厘米，基部圓或近截平，3裂或有時5裂，裂片三角狀卵形，有時卵狀長圓形，頂端漸尖，邊緣有疏而銳利地鋸齒，有時近基部全緣，兩面無毛或下面脈腋有簇毛；葉柄長2-3厘米，無毛。圓錐花序頂生，長6-7厘米，總花梗長約3厘米；萼片4，黃綠色，卵狀長圓形，長約2.5毫米；花瓣4，淡黃白色，倒卵形，長約2毫米。果初為淡紅色，後為淡黃色，小堅果長1.5-2.5厘米，直徑0.8-1厘米，翅長2-2.5厘米，成鈍角張開。

地理分布: 扯旗山、馬鞍山、大東山。廣東、廣西、湖南、江西、福建、浙江。

生境與生態：生於疏林中。花期4月，果期9月。

嶺南槭為中國特有種，模式標本採自香港，首次於1904年在大嶼山發現，具有一定的科學研究價值。本種的生長地點多在郊野公園內受到保護。城門標本林有栽培。

Description: Deciduous trees, 5-10 m tall; bark brown; branchlets slender, glabrous. Leaves papery, oval in outline, 6-7cm long and 8-11 cm wide, base rounded or subtruncate, trilobed or sometimes 5-lobed; lobes triangular-ovate, rarely ovate-oblong, apex acute or acuminate, margin serrulate, with appressed acute teeth, sometimes entire near base, glabrous or with tufted hairs at vein axils abaxially; petiole 2-3 cm long, glabrous. Panicles terminal, 6-7 cm long, peduncles c. 3 cm long; sepals 4, yellowish green, ovate-oblong, ca. 2.5 mm long; petals 4, pale yellowish white, obovate, ca. 2 mm long. Fruits pale reddish at first, yellowish later; nutlets 1.5-2.5 cm long, ca. 0.8-1 cm in diam.; wings spreading at an obtuse angle.

Distribution: Victoria Peak, Ma On Shan, Sunset Peak. Guangdong, Guangxi, Hunan, Jiangxi, Fujian, Zhejiang.

Habitat and ecology: In thin forests. Flowering: Apr.; fruiting: Sept.

First discovered in Lantau Island in 1904, it is an endemic species of China with the type locality in Hong Kong and is thus of value for studying Chinese flora. In Hong Kong, most of the localities of its occurrence are in Country Parks under protection. Living specimens are displayed in the Shing Mun Arboretum.

參考文獻 (References)：
羅獻瑞, 1995: 廣東植物誌3:274, 圖184。廣東科技出版社，廣州。