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資料編號: | HK-755 |
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中文名稱: | 楤木 |
學名: | Aralia chinensis [找同屬植物] |
植物科名: (APG新系統) | ARALIACEAE五加科 [找同科植物] |
標室舊系統 | ARALIACEAE五加科[找同科] |
生長習性: | 灌木_喬木 |
原生/外來: | 香港原生植物 |
圖片花色: | green_yellow |
發現開花: | Oct |
特別特徵: | 枝幹有刺 |
資料更新: | 20230108 06:24:30 pm |
備註: 深圳植物誌: 小枝、葉柄、葉軸、花序梗和花序軸均有皮刺。長刺楤木 除小枝疏生短小的皮刺外,葉柄、葉軸、花序梗和花序軸均無刺或偶有短小的皮刺,密被黃褐色絨毛。楤木 根據香港植物檢索手冊 小葉上面沿脈具小刺, 葉軸密具刺=> 長刺楤木 小葉無小刺 => 楤木 A.chinensis from hktree.com information 根據香港植物誌2008年版, 五加科楤木屬 有2個品種, 虎剌楤木Aralia finlaysoniana和楤木Aralia chinensis, 前者小葉片5-9塊, 後者為7-11塊. 數葉片可以辨認出來, 相當容易. 中國植物誌: 灌木或喬木,高2-5米,稀達8米,胸徑達10-15厘米;樹皮灰色,疏生粗壯直刺;小枝通常淡灰棕色,有黃棕色絨毛,疏生細刺。葉為二回或三回羽狀複葉,長60-110厘米;葉柄粗壯,長可達50厘米;托葉與葉柄基部合生,紙質,耳廓形,長1.5厘米或更長,葉軸無刺或有細刺;羽片有小葉5-11,稀13,基部有小葉1對;小葉片紙質至薄革質,卵形、闊卵形或長卵形,長5-12厘米,稀長達19厘米,寬3-8厘米,先端漸尖或短漸尖,基部圓形,上面粗糙,疏生糙毛,下面有淡黃色或灰色短柔毛,脈上更密,邊緣有鋸齒,稀為細鋸齒或不整齊粗重鋸齒,側脈7-10對,兩面均明顯,網脈在上面不甚明顯,下面明顯;小葉無柄或有長3毫米的柄,頂生小葉柄長2 -3厘米。圓錐花序大,長30-60厘米;分枝長20-35厘米,密生淡黃棕色或灰色短柔毛;繖形花序直徑1-1.5厘米,有花多數;總花梗長1-4厘米,密生短柔毛;苞片錐形,膜質,長3-4毫米,外面有毛;花梗長4-6毫米,密生短柔毛,稀為疏毛;花白色,芳香;萼無毛,長約1.5毫米,邊緣有5個三角形小齒;花瓣5,卵狀三角形,長1.5-2毫米;雄蕊5,花絲長約3毫米;子房5室;花柱5,離生或基部合生。果實球形,黑色,直徑約3毫米,有5稜;宿存花柱長1.5毫米,離生或合生至中部。花期7-9月,果期9-12月。 #二回羽狀複葉#三回羽狀複葉 FoHK Prickly and tawny-tomentose shrub, ca. 3 m tall; prickles slender, short, straight, base slightly expanded. Leaves usually bipinnate, ca. 1.2 m, with a pair of leaflets at each division of the rachis, pinnae 7–11-foliolate; leaflets leathery, subsessile to short-petiolulate, ovate to oblong-ovate, 8–11 × 4–8 cm, base rounded or subcordate, apex acuminate, margin serrulate, tawny-tomentose on both surfaces, especially along the veins abaxially; lateral veins 6– 8 pairs on each side of midvein, the tertiary veins obscure; petiolules 0– 5 mm. Inflorescence consisting of numerous, 30–50-flowered umbels of 2.5 cm in diam., forming a large terminal panicle, 30–60 cm, branches up to 50 cm, villose-tomentose. Pedicels about 1 cm, tomentose; bracteoles 3 mm, persistent. Calyx 2 mm, glabrous, distinctly 5-dentate. Petals 5, triangular-ovate, 2 mm, glabrous. Stamens 5, filaments 2.5 mm long. Ovary 5-locular; styles 5, united at base. Fruit globose, 4 mm in diam., prominently 5-ridged when dry. | |
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