微心叶毛柃查看源代码讨论查看历史
微心叶毛柃(学名:Eurya subcordata Hu et L. K. Ling),是山茶科柃属灌木或小乔木,高可达5米;种子黑褐色,有光泽。产于云南。 [1]
微心叶毛柃 |
中文学名:微心叶毛柃 拉丁学名:Eurya subcordata Hu et L. K. Ling 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 科:山茶科 亚 科:厚皮香亚科 族:杨桐族 属:柃属 分布区域:云南东南部 |
微心叶毛柃形态特征
灌木或小乔木, 高1-5米;幼枝圆柱形,密被黄褐色开展长柔毛,一年生枝毛被多少宿存;顶芽密被柔毛。
叶革质,长圆形、长圆状卵形或披针形,长2.5-3.5厘米,宽1-1.3厘米,先端钝或钝急尖,基部微心形,边缘具细密锯齿,叶面绿色,无毛,背面黄绿色,被短柔毛,中脉上毛被较密,侧脉6—9对,中脉和侧脉在叶面凹陷,背面突起,网脉在叶面微凹,背面略突;叶柄长约1毫米,被柔毛。
花1-3朵腋生,花梗长2-3毫米,疏生短柔毛;雄花:小苞片2,卵形;萼片5,阔卵形或近圆形,膜质,长约1.5毫米,先端圆形,外面疏生短柔毛,边缘具睫毛;花瓣5,白色,倒卵形或长圆状倒卵形,长约3.5毫米;雄蕊15-16枚,花药不具分格;退化子房密被柔毛;雌花小苞片、萼片和花瓣与雄花同,稍小;子房卵球形,密被柔毛,3室,花柱长约3毫米,先端3裂。
物种区别
微心叶毛柃和披针叶毛柃E. henryi Hemsl.很相似,但后者叶披针形,顶端尾状渐尖,基部圆形以及萼片无毛,花药具2-3分格等易于区别。
Shrubs or trees, 1-5 m tall. Older branches grayish brown, subglabrous; young branches spreading, blackish brown pubescent; current year branchlets terete, densely yellowish brown spreading villous; terminal buds densely pubescent. Petiole to 1 mm, pubescent; leaf blade oblong, ovate-oblong, or ovate-lanceolate, 2.5-3.5 × 1-1.3 cm, leathery, abaxially pale green and pubescent particularly along midvein, adaxially green and glabrous, midvein abaxially elevated and adaxially impressed, secondary veins 6-9 on each side of midvein, slender, abaxially raised, and adaxially impressed, base slightly cordate, margin closely serrulate, apex obtuse to acute. Flowers axillary, solitary or to 3 in a cluster. Pedicel 2-3 mm, sparsely pubescent. Male flowers: bracteoles small, ovate; sepals broadly ovate to suborbicular, ca. 1.5 mm, membranous, outside pubescent, margin ciliolate, apex rounded and with a black mucro; petals obovate to obovate-oblong, ca. 3.5 mm; stamens 15 or 16; anthers not locellate; pistillode densely pubescent. Female flowers: bracteoles, sepals, and petals similar to those of male flowers; ovary ovoid, densely pubescent, 3-loculed; style ca. 3 mm, apically 3-lobed. Immature fruit ovoid, 3-3.5 × ca. 3 mm, with ca. 10 seeds per locule, sparsely pubescent. Fl. Nov-Dec, fr. May-Jun.
微心叶毛柃生长环境
微心叶毛柃生于海拔1200-2100米的阴湿林下或溪谷林中。