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資料編號: | HK-4946 |
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中文名稱: | 風箱樹 |
學名: | Cephalanthus tetrandrus [找同屬植物] |
英文名稱: | Buttonbush |
植物科名: (APG新系統) | RUBIACEAE茜草科 [找同科植物] |
標室舊系統 | RUBIACEAE茜草科[找同科] |
生長習性: | 灌木_小喬木 |
原生/外來: | 香港原生植物 |
圖片花色: | white |
發現開花: | June |
特別特徵: | 單葉對生 |
資料更新: | 20220809 10:06:45 pm |
備註: 水團花VS風箱樹: 重點在托葉形狀跟花、萼裂片間的腺體有冇。 由中誌看, 風箱樹葉較肥大, 革質, 可以分出兩者. 水團花: 葉厚紙質; 寬1.5-3厘米 風箱樹: 葉近革質; 寬3-5厘米 以下是風箱樹圖片 image 對比葉片就比較清楚,花朵是很似的,但風箱的花比水楊梅大好多,兩種葉片不相似的。(Thanks Ann Wong's info) hk checklist: 胚珠及種子每室單個;葉對生或輪生--風箱樹屬 胚珠及種子每室多個; 葉對生-- 鉤藤屬, 烏藤屬, 水團花屬及槽裂木屬 FoHK Deciduous shrubs or small trees, 1–5 m tall. Branchlets pubescent when young, brown and glabrous in age. Stipules broadly ovate, 3–5 mm, usually with a black gland at the cuspidate apex. Leaves opposite or in whorls, subleathery; petioles 5–10 mm; leaf blade ovate or ovate‑lanceolate, 10–15 × 3–5 cm, base obtuse or subcordate, apex acute, adaxially glabrous or sparsely puberulent, abaxially glabrous or densely pubescent, especially in the axils of veins; lateral veins 8–12 on each side of midvein. Flowers heads globular, across calyces 8–12 cm in diam., terminal or axillary; peduncle 2.5–6 cm, simple or branched, pubescent. Calyx‑tube 2–3 mm, sparsely puberulent; lobes 4, apex obtuse, densely puberulent, usually with a black gland at the sinus of the lobes. Corolla white, tube 7–12 mm, glabrous abaxially, puberulent adaxially; lobes 4, oblong, with a black gland at the sinus of the lobes. Ovary inferior; style long exserted. Aggregate fruit globose, 10–20 mm in diam.; nutlets 4–6 mm, with persistent calyx at apex. 落葉灌木或小喬木,高1-5米;嫩枝近四棱柱形,被短柔毛,老枝圓柱形,褐色,無毛。葉對生或輪生,近革質,卵形至卵狀披針形,長10-15厘米,寬3-5厘米,頂端短尖,基部圓形至近心形,上面無毛至疏被短柔毛,下面無毛或密被柔毛;側脈8-12對,脈腋常有毛窩;葉柄長5-10毫米,被毛或近無毛;托葉闊卵形,長3-5毫米,頂部驟尖,常有一黑色腺體。 頭狀花序不計花冠直徑8-12毫米,頂生或腋生,總花梗長2.5-6厘米,不分枝或有2-3分枝,有毛;小苞片棒形至棒狀匙形;花萼管長2-3毫米,疏被短柔毛,基部常有柔毛,萼裂片4,頂端鈍,密被短柔毛,邊緣裂口處常有黑色腺體1枚;花冠白色,花冠管長7-12毫米,外面無毛,內面有短柔毛,花冠裂片長圓形,裂口處通常有1枚黑色腺體;柱頭棒形,伸出於花冠外。果序直徑10-20毫米;堅果長4-6毫米,頂部有宿存萼簷;種子褐色,具翅狀蒼白色假種皮。花期春末夏初。 | |
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