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血桐Macaranga (Xietong)

向桐
 
血桐的葉子形狀似小象的耳朵,也似盾牌狀,太陽轉動到哪裡血桐的葉也跟著轉動到哪裡。而當血桐的樹幹受損或斷裂時,緩緩流出白色乳汁,起先並不顯眼,但流出的樹液及髓心周圍經氧化後會轉變成血紅色,像流血一樣,故而得名。
血桐的葉子可作為動物的飼料,而木材材質輕軟則可供作建材、火柴及火柴盒之用。
血桐的果實成熟時裂開,裡面有三顆黑油油的種子。松鼠和鳥類都愛吃,臺灣黑星小灰蝶更以血桐的果實為食餌。
 
The leaves of the Macaranga (Xietong) look like the ears of a baby elephant or the shape of a shield, and are always facing the sun. When the branches are damaged or broken they leak white milk, which is not obvious at first, but with time both the white milk and the core turn red because of oxidation. The red color is like blood (xie), which is how the tree got its name.
The leaves can be used as animal feed; the light, soft wood is used for building materials, matches, and match boxes.