耳果相思的耳果 the fruit of earleaf acacia/earpod wattle

耳果相思與香港種植繁多的樹種台灣相思是同科同屬的,所以他們某些特徵相近,如開黃色毛絨的花, 如他們的真葉只出現在幼苗時期,成樹茂密的是葉柄進化的「假葉」。

耳果相思在香港的郊區和市區常見,是常綠喬木。原籍澳洲、南亞。

此樹的「假葉」呈闊鐮刀形,有三、四主脈。穗狀花序,橙黃色細小花數枚簇生於葉腋或枝頂。

立即介紹本文的主角,耳果相思的莢果。何其有趣的造型,扭彎再扭彎,植物科學前輩認為像耳朵故命名。我則覺得像搖鼓,特別是果成熟木化後。這照片是本星期拍的,果實非常鮮嫩,帶著新生的粉綠色。

acacia is a very common planting species in hong kong. back in the 1970s formosa acacia was one of the top three species planting in our country parks as well as in the city. earleaf acacia shares the same family and genus with formosa acacia and it is also common in hong kong. the former is native to australia and south asia, while the latter is native to southeast asia.

this photo was taken early this week. we can see young fruits are blossoming. the pods are twisted with irregular spirals. nature can be curious artists. the young green sculpture-like bearing will be brown and bit woody when mature.

on the note of the shape of this fruit, i found it interesting in the difference between the chinese and english common names of this species. the chinese says “ear-shaped fruit acacia”, while the english refers the leaf in ear-shape. maybe another english name fits better with the chinese – earpod wattle.

earpod-wattle-jan2017

耳果相思 earleaf acacia (acacia auriculiformis) – kingdom: 植物界 plantae | (unranked): angiosperms | (unranked): eudicots | (unranked): rosids | order: fabales 豆目 | family: fabaceae 豆科 | genus: acacia 金合歡屬 | species: a. auriculiformis 耳果相思

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