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光柃
光柃1.jpg

原图链接 来自植物标本馆

中文学名:光柃

拉丁学名:Eurya glaberrima Hayata

别 称:厚叶柃木

界:植物界

门:被子植物门

纲:双子叶植物纲

目:侧膜胎座目

科:山茶科

属:柃木属

种:光柃

光柃(学名:Eurya glaberrima Hayata),是山茶科柃木属植物,产于我国台湾恒春嘉义阿里山宜兰太平山等地。 [1]

目录

光柃形态特征

灌木或小乔木,全株无毛;嫩枝黄绿色或红褐色,稍具2棱,小枝红褐色,略具棱,老枝紫褐色,圆柱形;顶芽披针形,无毛。

叶革质,狭披针形或狭长圆形,长4-8厘米,宽1.2-2.4厘米,顶端略尖,尖顶钝,且有微凹,基部楔形,边缘密生细锯齿,干后稍反卷,上面深绿色,有光泽,下面黄绿色,两面无毛,中脉在上面凹下,下面凸起,侧脉6-8对,两面均甚明显且稍隆起;叶柄长2-4毫米。

花1-3朵生于叶腋,花梗长1.5-2毫米,无毛。雄花:小苞片2,萼片状,微小;萼片5,近圆形,长约2毫米,顶端圆,边缘有纤毛;花瓣5,白色,倒卵形或倒卵状长圆形,长约3毫米;雄蕊6-10枚,花药具分格,退化子房无毛。雌花的小苞片和萼片与雄花同,但较小;花瓣5,倒卵形,长约2.5毫米;子房卵圆形,无毛,花柱极短,长不超过1毫米,3深裂几达基部。

果实圆球形,无毛,直径约3毫米,未熟。花期10-12月 。

Shrubs or small trees. Young branches reddish brown, glabrous; current year branchlets yellowish green, slightly 2-ribbed, glabrous; terminal buds glabrous. Petiole 2-4 mm, glabrous; leaf blade lanceolate to oblong-lanceolate, 4-8 × 1.2-2.4 cm, leathery, abaxially yellowish green and glabrous, adaxially dark green and shiny, midvein abaxially elevated and adaxially impressed, secondary veins 6-8 on each side of midvein and slightly raised on both surfaces, base cuneate, margin closely serrulate and slightly revolute when dry, apex acute and with an obtuse to retuse tip. Flowers axillary, solitary or to 3 in a cluster. Pedicel 1.5-2 mm, glabrous. Male flowers: bracteoles very small; sepals suborbicular, ca. 2 mm, outside glabrous, margin ciliolate, apex rounded; petals obovate to obovate-oblong, ca. 3 mm; stamens 6-10; anthers locellate; pistillode glabrous. Female flowers: bracteoles and sepals similar to those of male flowers but slightly smaller; petals obovate, ca. 2.5 mm; ovary ovoid, glabrous; style ca. 1 mm, 3-parted to base. Immature fruit globose, ca. 3 mm in diam., glabrous. Fl. Oct-Dec.

光柃生长环境

多生于海拔1500-3300米的山地阔叶林中 。

光柃分布范围

产于我国台湾恒春嘉义阿里山宜兰太平山等地。模式标本采自台湾Morrison

辨析

本种近似滨柃E. emarginata (Thunb.) Makino,但本种嫩枝略具2棱,连同顶芽均无毛,叶狭长,顶端略尖以及雄蕊6-10枚等易于区别。

参考来源

  1. 光柃, 植物智, 2020-01-18