柬埔寨子楝樹檢視原始碼討論檢視歷史
柬埔寨子楝樹 |
中文學名:柬埔寨子楝樹 界:植物界 門:被子植物門 綱:雙子葉植物綱 目:桃金娘目 科:桃金娘科 屬:子楝樹屬 |
柬埔寨子楝樹((jiǎn bù zhài zǐ liàn shù,學名:Decaspermum cambodianum),為桃金娘科子楝樹屬下的一個植物種。產自海南島。 [1]
柬埔寨子楝樹形態特徵
喬木,高約12米;嫩枝無毛,干後黑褐色。
葉片革質,橢圓形或倒卵形,長5.5-8厘米,寬2.5-5厘米,先端短尖,尖頭鈍,基部楔形,兩面無毛,干後上面暗褐色,有多數小腺點,下面灰褐色,側脈9-10對,不明顯;葉柄長5-7毫米。聚傘花序腋生,長1.5-4厘米,少花,無毛,總梗有棱;花白色,4數;苞片披針形,長2毫米;萼管倒圓錐形,萼片卵形,宿存,無毛;花瓣卵形,長2-3毫米,無毛;雄蕊多數,花絲無毛。
漿果球形,直徑4-5毫米;種子4-5個。花期4-5月 。[2]
嫩枝及葉無毛,葉片倒卵形,是國產種類中葉片最大的代表,花序及花均無毛,花4數,萼片短,同其他種易於區別。
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.
柬埔寨子楝樹生長環境
見於中海拔至高海拔的森林中。
柬埔寨子楝樹分布範圍
柬埔寨子楝樹(海南植物志)產自廣東海南島。分布於中南半島至馬來西亞。