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三球悬铃木Platanus orientalis

时间:2013-10-30 12:42来源:未知 作者:徐晔春 点击:
中文名( Chinese Name ):三球悬铃木 学名( Scientific Name ): Platanus orientalis L. 英文名( English Common Name ): Oriental planetree 别名( Chinese Common Name ): 法国梧桐、悬铃木 异名( Synonym ): Platanus digitata Gord. Plata
中文名(Chinese Name):三球悬铃木
学名(Scientific Name):Platanus orientalis L.
英文名(English Common Name):Oriental planetree
别名(Chinese Common Name):法国梧桐、悬铃木
异名(Synonym):Platanus digitata Gord.  Platanus digitifolia Palib.  Platanus orientalior Dode
科属(Family & Genus):悬铃木科(Platanaceae)悬铃木属
形态特征(Description):落叶大乔木,高达30米,树皮薄片状脱落;嫩枝被黄褐色绒毛,老枝秃净,干后红褐色,有细小皮孔。叶大,轮廓阔卵形,宽9-18厘米,长8-16厘米,基部浅三角状心形,或近于平截,上部掌状5-7裂,稀为3裂,中央裂片深裂过半,长7-9厘米,宽4-6厘米,两侧裂片稍短,边缘有少数裂片状粗齿,上下两面初时被灰黄色毛被,以后脱落,仅在背脉上有毛,掌状脉5条或3条,从基部发出;叶柄长3-8厘米,圆柱形,被绒毛,基部膨大;托叶小,短于1厘米,基部鞘状。花4数;雄性球状花序无柄,基部有长绒毛,萼片短小,雄蕊远比花瓣为长,花丝极短,花药伸长,顶端盾片稍扩大;雌性球状花序常有柄,萼片被毛,花瓣倒披针形,心皮4个,花柱伸长,先端卷曲。果枝长10-15厘米,有圆球形头状果序3-5个,稀为2个;头状果序直径2-2.5厘米,宿存花柱突出呈刺状,长3-4毫米,小坚果之间有黄色绒毛,突出头状果序外。
分布(Distribution):原产欧洲东南部及亚洲西部,久经栽培,据记载我国晋代即已引种。
用途(Use):
引自中国植物志英文版:FOC Vol. 9 Page 44      
Platanus orientalis Linnaeus, Sp. Pl. 2: 999. 1753.
三球悬铃木 san qiu xuan ling mu| Platanaceae  | Platanus
Trees deciduous, to 30 m tall. Young branchlets yellow-brown tomentose, old ones glabrous, becoming red-brown after drying, small lenticellate. Stipules less than 1 cm; petiole terete, 3–8 cm, tomentose; leaf blade broadly ovate, 9–18 × 8–16 cm, deeply (3 or)5- or 7-lobed, both surfaces gray-yellow pubescent at first, glabrate and then pubescent only along veins abaxially, principal veins 3 or 5, arising from base, base shallowly cordate or subtruncate; central lobe 7–9 × 4–6 cm, margin lobed; lateral lobes shorter, margin coarsely dentate. Flowers 4-merous. Male flowers: sepals short, small; stamens much longer than petals; filaments very short; anthers elongate. Female flowers: sepals pubescent; petals oblanceolate; carpels 4; styles elongate, apex crispate. Fruiting branchlets with (2 or)3–5 infructescences. Infructescence capitate, 2–2.5 cm in diam. Achenes with persistent style spiniform, 3–4 mm; basal hairs yellow; both styles and hairs exserted from infructescence. Fl. Mar–May, fr. Jun–Oct.
Cultivated in China [native to SW Asia and SE Europe].
 




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