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銀樺

Page history last edited by PBworks 12 years, 8 months ago

銀樺

學名:Grevillea robusta 英文名字:dalecarlica,Silk oak,, Fern tree

 

銀樺的葉子很特別,除形狀是美麗的二回羽狀深裂外,葉背有特殊銀色茸毛。

陽光照射時,葉背會呈現銀白色的光澤

 

初夏綻放的花也讓銀樺有不一樣的色彩。基本上是橙黃色的筒狀小花,但是聚集成總狀花序就很顯眼,

 

花:總狀花序,花頂生或腋生,花色橙黃色;花單性,小形,顏色橙黃。花被筒狀,先端4裂,雄蕊4個,無花絲。

 

果實:蓇葖果,球形具茸毛,黃褐色,種子有翼。

 

銀樺屬於山龍眼科家族,是古老的樹種,古老到五大洲還是剛瓦那大陸時就已經存在了,但是現在只剩澳洲大陸有原生銀樺了。台灣的銀花都是引進的。

 

在靠近慈濟社區後門的銀樺樹幹上,有樹脂流出來,可能是受到感染所致。

 

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