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| 資料編號: | HK-197 |
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| 中文名稱: | 齒葉冬青 |
| 學名: | Ilex crenata [找同屬植物] |
| 植物科名: (APG新系統) | AQUIFOLIACEAE冬青科 [找同科植物] |
| 標室舊系統 | AQUIFOLIACEAE冬青科[找同科] |
| 生長習性: | 常綠灌木 |
| 原生/外來: | 外來植物 |
| 圖片花色: | white |
| 發現開花: | Dec |
| 資料更新: | 20220721 04:40:28 pm |
| 備註: Ilex 冬青屬 section Paltoria 矮冬青組 I. crenata #齒葉冬青 親緣上比較相近有 台灣的I. maximowicziana #倒卵葉冬青 跟大家熟悉的 I. viridis #綠冬青，葉背的深色腺點所以是其中重要辨識特徵之一。跟同組同系的物種比較的話，齒葉冬青的葉明顯比較細塊。齒葉冬青其實有不少forma 型 跟 cultivator 栽培種，其中一種就是塊葉會拱起的I. crenata f. convexa 龜甲冬青，相當特別的一個品種。 常綠灌木。 幼枝具縱棱，密被短柔毛； 托葉鑽形，微小； 葉柄2-3mm，具短柔毛； 葉片倒卵形，橢圓形的，或長圓狀橢圓形的， 1-3.5 x 0.5-1.5 cm，革質，背面無毛，密被深色腺點， 除了在中脈上正面無毛， 中脈正面平或者稍凹陷，具短柔毛，側脈3-5 對，不明顯，基部鈍或楔形，邊緣圓齒狀鋸齒，先端圓鈍或近尖。 雌花單花，或2-3花組成聚傘花序生於當年生枝的葉腋內；花梗長3.5-6mm，向頂端稍增粗，具縱棱，近中部具1或2枚小苞片；花4基數，花萼直徑約3mm，4裂，裂片圓形；花冠直徑約6mm，花瓣卵形，長約3mm，基部合生；退化雄蕊長為花瓣的1/2，不育花藥箭頭形；子房卵球形，長約2mm，柱頭盤狀，4裂。 參考: Hu, S. (1949). THE GENUS ILEX IN CHINA. Journal of the Arnold Arboretum, 30(3), 233–344. Link1 | Link2 ref.photos FOHK: Evergreen shrub, up to 2 m high; branchlets puberulous. Leaves leathery; stipules subulate, persistent; petioles short, 2– 3 mm; leaf blade obovate, ovate or oblong-elliptic, 1 – 2.5 × 0.5 – 1.5 cm, base obtuse, acute or cuneate, apex rounded, obtuse, mucronulate, margin crenate or serrate, punctate abaxially. Staminate cymes 1– 7-flowered, solitary, axillary to scales or lower leaves of the current year’s growth; peduncles 4– 9 mm; pedicels 2– 3 mm; flowers 4-merous; calyx 2 mm in diam., glabrous, 4-lobed; corolla 4 mm across, petals broadly elliptic, one-fifth connate; stamens short; anthers ellipsoidal; rudimentary ovary conical. Pistillate flowers solitary, rarely in 2- or 3-flowered cymes, axillary, on the current year’s growth only; pedicels 4 – 6 mm long; flower 4-merous; calyx 3 mm in diam., lobes rounded; corolla rotate, 6 mm across, petals one-third connate; staminodes short, sterile anthers sagittate; ovary ovoid-conic, style sometimes evident, stigma discoid, 4-lobed. Fruit black, globose, 6 – 8 mm in diam., stigma thickly discoid, lobed. Pyrenes 4, oblong-elliptic, 5 × 3–3.5 mm, smooth, striate, esulcate, striae slightly impressed, endocarp coriaceous. Locality: Cultivated. S. Y. Hu 9914 (CUHK). Ref | |
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