柬埔寨子楝树
柬埔寨子楝树 |
中文学名:柬埔寨子楝树 界:植物界 门:被子植物门 纲:双子叶植物纲 目:桃金娘目 科:桃金娘科 属:子楝树属 |
柬埔寨子楝树((jiǎn bù zhài zǐ liàn shù,学名:Decaspermum cambodianum),为桃金娘科子楝树属下的一个植物种。产自海南岛。 [1]
目录
柬埔寨子楝树形态特征
乔木,高约12米;嫩枝无毛,干后黑褐色。
叶片革质,椭圆形或倒卵形,长5.5-8厘米,宽2.5-5厘米,先端短尖,尖头钝,基部楔形,两面无毛,干后上面暗褐色,有多数小腺点,下面灰褐色,侧脉9-10对,不明显;叶柄长5-7毫米。聚伞花序腋生,长1.5-4厘米,少花,无毛,总梗有棱;花白色,4数;苞片披针形,长2毫米;萼管倒圆锥形,萼片卵形,宿存,无毛;花瓣卵形,长2-3毫米,无毛;雄蕊多数,花丝无毛。
浆果球形,直径4-5毫米;种子4-5个。花期4-5月 。[2]
嫩枝及叶无毛,叶片倒卵形,是国产种类中叶片最大的代表,花序及花均无毛,花4数,萼片短,同其他种易于区别。
Decaspermum cambodianum Gagnep. in Bull. Mus. Hist. Nat. Paris 26: 73. 1920 et in Lecte. Fl. Gen. Indo-Chine 2: 846. f. 91. 1921; Merr. & Chun in Sunyatsenia 2: 291. 1935; Merr. et Perry in Journ. Arn. Arb. 19: 201. 1938; 海南植物志2: 9. 1965——Eugenia multipunctataa Merr. in Journ. Arn. Arb. 6: 138. 1925 et in Lingnan Sci. Journ. 5: 136. 1927.——E. ciliaris Ridley in Kew Bull. 2: 74. 1928.
Trees, to 10 m tall. Branchlets sparsely sericeous. Petiole 3-10 mm; leaf blade obovate to oblanceolate, 2.7-9 × 1.8-4.2 cm, stiffly papery to leathery, abaxially glabrous, adaxially glossy and turning blackish when dry, secondary veins 5-7 on each side of midvein and ascending, intramarginal veins 1-2 mm from margin, base cuneate to attenuate, margin revolute, apex acute, shortly acuminate, or sometimes obtuse. Inflorescences axillary or lateral below leaves, dichasia, racemes, or thyrses, to 4 cm, 3-flowered, branches terete and glabrous; bracts small, caducous. Flowers (3 or)4-merous, bisexual or staminate; bracteoles ovate, ca. 1 mm, caducous. Hypanthium campanulate to funnel-shaped, 1-1.5 mm, glabrous. Calyx lobes obtuse to truncate, 1-1.5 × 1-2 mm, unequal, glabrous or ciliate. Petals white, orbicular, ca. 3 mm, ciliate. Stamens white, ca. 3 mm. Ovary 4-loculed. Style ca. 3 mm; stigma capitate. Fruit dark purple, globular, 3-5 mm in diam., 5- or 6-ribbed, glabrous. Seeds 3-5 per fruit, ca. 1.5 mm. Fl. Apr-May.
柬埔寨子楝树生长环境
见于中海拔至高海拔的森林中。