鈍齒柃
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中文學名:鈍齒柃 拉丁學名:Eurya crenatifolia (Yamamoto) Kobuski 二名法:Eurya crenatifolia (Yamamoto) Kobuski 界:植物界 門:被子植物門 綱:雙子葉植物綱 亞 綱:五椏果亞綱 目:杜鵑花目 亞 目:山茶目 科:山茶科 亞 科:厚皮香亞科 族:楊桐族 屬:柃木屬 種:鈍齒柃 |
鈍齒柃 Eurya crenatifolia (Yamamoto) Kobuski in Ann. Miss. Bot. Gard. 25: 332, 1937; Keng in Taiwania 1: 258, 1950; H. T. Chang in Act. Phytotax. Sin. 3: 38, 1954; Liu,Ill. Nat. Intr. Lign. Pl. Taiwan 1: 246, pl. 20, 1960; 台灣樹木志589, 1963; L. K. Ling in Act. Phytotax. Sin. 11: 336, 1966; 台灣植物志2: 608, 1976; 中國高等植物圖鑑補編2: 486, 1983.——Pseudoeurya crenatifolia Yamamoto in Journ. Soc. Trop. Agric.5: 351, 1933; et in Sylvia 5: 43, f. 36, 1934. [1]
目錄
鈍齒柃形態特徵
灌木；嫩枝纖細，圓柱形，灰褐色，被柔毛，小枝灰褐色或灰白色，無毛或幾無毛；頂芽細錐形，漸尖，疏被柔毛。
葉革質，橢圓形或倒卵狀長圓形，長1-2.5厘米，寬0.8-1.5厘米，頂端銳尖，尖頭鈍，並有微凹，基部楔形或闊楔形，邊緣有鈍鋸齒，稍反卷，上面綠色，下面淡綠色，兩面無毛或下面初時沿中脈上略被柔毛，迅即脫落而無毛，中脈在上面凹下，下面凸起，側脈5-7對，在上面不明顯或略凹下，在下面凸起；葉柄長1-1.5毫米，無毛或幾無毛。
花1-3 (-4)朵簇生於葉腋，花梗長1.5-2毫米，無毛，雄花：小苞片2，卵形或近圓形，細小，疏被短柔毛；萼片5，卵形或近圓形，長1-1.5毫米，頂端圓或鈍，無毛，邊緣也無纖毛；花瓣5，倒卵形或卵圓形，長約1.5毫米；雄蕊5枚，花葯不具分格，退化子房無毛。雌花的小苞片和萼片與雄花同；花瓣5,卵形，長約1.5毫米；子房圓球形，3室，無毛，花柱長約1毫米，頂端3深裂幾達基部。
果實圓球形，直徑約3毫米；種子每室1-4個，腎形，略扁，深褐色，表面具細蜂窩狀網紋。
Shrubs. Young branches grayish brown to grayish white, glabrous; current year branchlets terete, pubescent; terminal buds sparsely pubescent. Petiole 1-1.5 mm, pubescent or glabrescent; leaf blade elliptic to obovate-oblong, 1-2.5 × 0.8-1.5 cm, leathery, abaxially pale green and glabrous or sparsely pubescent along midvein when young, adaxially green and glabrous, midvein abaxially elevated and adaxially impressed, secondary veins 5 or 6 on each side of midvein, abaxially raised, and adaxially obscure to slightly impressed, base cuneate to broadly cuneate, margin crenate-serrate, apex acute and with an obtuse to retuse tip. Flowers axillary, solitary or to 4 in a cluster. Pedicel 1.5-2 mm, glabrous. Male flowers: bracteoles ovate to suborbicular, ca. 0.5 mm, outside sparsely pubescent; sepals ovate to suborbicular, 1-1.5 mm, glabrous, apex obtuse to rounded; petals obovate to ovate, ca. 1.5 mm; stamens 5; anthers not locellate; pistillode glabrous. Female flowers: bracteoles and sepals similar to those of male flowers; petals ovate, ca. 1.5 mm; ovary globose, glabrous, 3-loculed; style ca. 1 mm, apically 3-parted. Fruit globose, ca. 3 mm in diam., with 1-4 seeds per locule. Seeds dark brown, reniform. Fl. Feb-Mar, fr. Jun-Sep.
鈍齒柃生長環境
主要生長於海拔1300-2300米的山地林下或疏林中。