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钝齿柃
钝齿柃1.jpg

原图链接 来自植物智

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

分布区域:产于我国台湾台北

宜兰太平山花莲等地

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]

目录

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。

原图链接 来自植物智

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。

参考来源

  1. 钝齿柃, 植物智, 2020-01-18