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| 資料編號: | HK-477 |
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| 中文名稱: | 香椿 |
| 學名: | Toona sinensis [找同屬植物] |
| 英文名稱: | Chinese Mahogany |
| 植物科名: (APG新系統) | MELIACEAE楝科 [找同科植物] |
| 標室舊系統 | MELIACEAE楝科[找同科] |
| 生長習性: | 落葉喬木 |
| 原生/外來: | 外來植物 |
| 圖片花色: | white_pink |
| 發現開花: | June |
| 特別特徵: | 偶數羽狀複葉互生_小葉互或小葉生 |
| 資料更新: | 20220831 10:52:21 pm |
| 備註: 香椿: 種子上端有膜質的長翅，下端無翅 紅椿: 種子兩端均有膜質翅 葉互生，偶數羽狀複葉；小葉互生或對生 葉兩面無毛 A rare duodichogamous flowering system in monoecious Toona sinensis ( Meliaceae )二重雌雄異熟性 FoHK Up to 25 m tall. Leaves paripinnate, 25–50(–90) cm; leaflets 14–28, opposite or alternate; petiolules 0.5–1 cm; blades papery, ovate-lanceolate to oblong-elliptic, 6–17 × 2.5–4.5 cm, base oblique, apex caudate to acute, margin sparsely serrate or rarely entire, glabrous and without spots on both surfaces, sometimes slightly hairy when young; lateral veins 18–24 on each side of midvein. Panicles as long as or longer than leaves, glabrous or puberulous. Flowers small. Pedicels short. Calyx cupular, 5-lobed or undulate, ca. 1 mm, pubescent abaxially, margin ciliate. Petals 5, white, oblong, 4–5 mm, glabrous, apex obtuse. Stamens 5; staminodes 5. Disk glabrous. Ovary conical, with 5 stripes, glabrous; ovules 8 per locule. Style longer than ovary; stigma disciform. Capsule purplish brown, narrowly ellipsoidal, 1–3.5 cm, glaucous lenticellate, dehiscing into 5 valves when mature. Seed brown, apex with a long membranous wing. 中國植物誌 樹皮粗糙，深褐色，片狀脫落。葉具長柄，偶數羽狀複葉，長30-50厘米或更長；小葉16-20，對生或互生，紙質，卵狀披針形或卵狀長橢圓形，長9-15厘米，寬2.5-4厘米，先端尾尖，基部一側圓形，另一側楔形，不對稱，邊全緣或有疏離的小鋸齒，兩面均無毛，無斑點，背面常呈粉綠色，側脈每邊18-24條，平展，與中脈幾成直角開出，背面略凸起；小葉柄長5-10毫米。圓錐花序與葉等長或更長，被稀疏的銹色短柔毛或有時近無毛，小聚繖花序生於短的小枝上，多花；花長4-5毫米，具短花梗；花萼5齒裂或淺波狀，外面被柔毛，且有睫毛；花瓣5，白色，長圓形，先端鈍，長4-5毫米，寬2-3毫米，無毛；雄蕊10，其中5枚能育，5枚退化；花槃無毛，近念珠狀；子房圓錐形，有5條細溝紋，無毛，每室有胚珠8顆，花柱比子房長，柱頭盤狀。蒴果狹橢圓形，長2-3.5厘米，深褐色，有小而蒼白色的皮孔，果瓣薄；種子基部通常鈍，上端有膜質的長翅，下端無翅。花期6-8月，果期10-12月。 | |
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