钝齿柃查看源代码讨论查看历史
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中文学名:钝齿柃 拉丁学名:Eurya crenatifolia (Yamamoto) Kobuski 二名法:Eurya crenatifolia (Yamamoto) Kobuski 界:植物界 门:被子植物门 纲:双子叶植物纲 亚 纲:五桠果亚纲 目:杜鹃花目 亚 目:山茶目 科:山茶科 亚 科:厚皮香亚科 族:杨桐族 属:柃木属 种:钝齿柃 |
钝齿柃 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; 台湾树木志589, 1963; L. K. Ling in Act. Phytotax. Sin. 11: 336, 1966; 台湾植物志2: 608, 1976; 中国高等植物图鉴补编2: 486, 1983.——Pseudoeurya crenatifolia Yamamoto in Journ. Soc. Trop. Agric.5: 351, 1933; et in Sylvia 5: 43, f. 36, 1934. [1]
钝齿柃形态特征
灌木；嫩枝纤细，圆柱形，灰褐色，被柔毛，小枝灰褐色或灰白色，无毛或几无毛；顶芽细锥形，渐尖，疏被柔毛。
叶革质，椭圆形或倒卵状长圆形，长1-2.5厘米，宽0.8-1.5厘米，顶端锐尖，尖头钝，并有微凹，基部楔形或阔楔形，边缘有钝锯齿，稍反卷，上面绿色，下面淡绿色，两面无毛或下面初时沿中脉上略被柔毛，迅即脱落而无毛，中脉在上面凹下，下面凸起，侧脉5-7对，在上面不明显或略凹下，在下面凸起；叶柄长1-1.5毫米，无毛或几无毛。
花1-3 (-4)朵簇生于叶腋，花梗长1.5-2毫米，无毛，雄花：小苞片2，卵形或近圆形，细小，疏被短柔毛；萼片5，卵形或近圆形，长1-1.5毫米，顶端圆或钝，无毛，边缘也无纤毛；花瓣5，倒卵形或卵圆形，长约1.5毫米；雄蕊5枚，花药不具分格，退化子房无毛。雌花的小苞片和萼片与雄花同；花瓣5,卵形，长约1.5毫米；子房圆球形，3室，无毛，花柱长约1毫米，顶端3深裂几达基部。
果实圆球形，直径约3毫米；种子每室1-4个，肾形，略扁，深褐色，表面具细蜂窝状网纹。
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.
钝齿柃生长环境
主要生长于海拔1300-2300米的山地林下或疏林中。
钝齿柃分布范围
主要分布于台湾台北、宜兰、太平山、花莲等地；模式标本采自台湾Pianan山。