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資料編號: | HK-539 |
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中文名稱: | 藍花楹 |
學名: | Jacaranda mimosifolia [找同屬植物] |
英文名稱: | Jacaranda |
植物科名: (APG新系統) | BIGNONIACEAE紫葳科 [找同科植物] |
標室舊系統 | BIGNONIACEAE紫葳科[找同科] |
生長習性: | 喬木 |
原生/外來: | 外來植物 |
圖片花色: | purple_blue |
發現開花: | May |
特別特徵: | 二回羽狀複葉對生_羽片軸有狹翅 |
資料更新: | 20220820 09:30:52 am |
備註: 娃娃手記: 1.葉生於當年生枝上,為二回羽狀複葉 2.每一羽片有小葉35-51片[15-25對] 同Jacaranda obtusifolia好相似, 藍花楹 Jacaranda mimosifolia 蒴果扁,近圓形. J.obtusifolia 蒴果長橢圓形 深圳植物誌: 落葉喬木,高10-15m。小枝疏被短柔毛,老枝近無毛。葉生於當年生枝上,為二回羽狀複葉,長30-40cm;葉柄長5-10cm,與葉軸及羽片軸均疏被短柔毛;羽片27-45枚;羽片軸有狹翅;每一羽片有小葉35-51片[15-25對小葉];小葉柄不明顯;側生小葉葉片狹長圓形或狹橢圓形,長0.8-1cm,寬3-5mm,基部圓或寬楔形,兩側略不對稱,邊緣全緣,先端漸尖或尾狀漸尖,下面近無毛或沿中脈疏被短柔毛,上面疏被短柔毛,或僅邊緣被毛,頂生小葉片較大,通常為棱狀長圓形或卵狀披針形,長2-2.5cm,寬5-6mm,基部楔形,先端長漸尖。 聚傘圓錐花序頂生,長25-30cm,由多數复二歧聚繖花序組成,具多數花,有香氣;花萼杯狀,長3-4mm,疏被微柔毛,先端有5枚三角形的短齒;花冠藍色,長4.5-5cm,外面密被多細胞長柔毛,花冠筒1/3以下較細,直徑7-8mm,微彎,以上膨大,至喉部直徑為1.5-1.6cm ,簷部微呈二唇形,具5裂片,裂片近圓形,除下唇的中裂片略長外,其餘的2枚側裂片與上唇2裂片均近等長;能育雄蕊著生於花冠筒的中部偏下,不伸出花冠筒外,花絲下部密被多細胞的腺毛,毛長短不一,花藥僅1室發育,另一室退化,退化雄蕊遠長於能育雄蕊,花絲下部線形,向上部漸加寬而扁,中部及頂端密被多細胞的長腺毛;子房圓柱形,無毛,花柱不伸出花冠筒之外,柱頭扁,不等的2裂。 蒴果扁,近圓形,長寬均為4.5-5.5cm,成熟時暗褐色,果瓣木質,中間略厚,向四周逐漸變薄。種子扁,近圓形或寬倒卵形,直徑7-8mm,周圍有透明的膜質翅。花期:4-6 月。果期:5-10月。 FoHK: Deciduous tree to 15 m tall, 45 cm in d.b.h.; bark grey. Leaves 2‑pinnately compound, 15–30 cm, pinnae over 10 pairs; pinnae 5–10 cm, leaflets 16–24 pairs; leaflets small, papery, sessile, narrowly elliptic, 0.6–1.2 × 0.2–0.7 cm, base cuneate, apex abruptly acuminate, margin entire, slightly revolute, glabrous or puberulent along veins and margin. Panicles terminal, many‑flowered. Calyx campanulate, ca. 1 mm, apex 5‑dentate. Corolla bilabiate, bluish purple, tube tubular‑campanulate, 3–4 mm, white adaxially, throat 0.7–1.2 cm wide, lobes 0.3–0.8 cm, pubescent abaxially. Stamens didynamous; filaments pubescent at lower half; anthers 1‑celled, ca. 2 mm; staminodes 2 – 2.5 cm, glandular hairy at upper part. Pistil 2.2–2.5 cm; ovary 2 – 3.5 mm, glabrous. Capsule orbicular, ca. 5 cm in diam. | |
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