朴樹 chinese hackberry

常見的本地原產落葉喬木,魁梧身軀,很好遮蔭。花期在初春,維期短促,約一、二個星期後,果子便會長出。「朴子」體積細,初時呈綠色,成熟時變成黑色或暗橙黃色,汁少卻甜,很受鳥類歡迎。難怪家附近的山坡有好幾顆,秋冬時節最多雀鳥聚腳。朴樹的葉子互生,基部有點歪形稱之「歪基」,是榆科植物之特徵。卵狀叶片上半部尖而呈鋸齒形。

 

chinese hackberry is a common native tree. it provides good shade. even though it is not as charismatic as tree cotton or chinese banyan, its leaves, flowers and fruit are actually full of characters.

the flowering period is very brief and the flowers are small and bland in colour. fruit will grow one to two weeks after the flowers.fruit first emerges green, then turns black or dark orange when ripe. though small, the fruit is sweet and popular with birds. no wonder the few chinese hackberries outside my window always have birds gather around during fall and winter when the fruit is still bearing.

its leaves are a little crooked at the base, which is the characteristic of ulmaceae. the upper part of the ovate leaves is jagged and the leaves are pointed in the tips.

這陣子趕春,碰巧給我捉到朴樹嫩葉、花、果子拚發。稚嫩的部件,樣貌奇妙。當中的學問更如神奧。《樹木谷》說:朴樹的花屬於雜性同株,單性花和兩性花存在於同株植物上。在嫩枝基部的為雄性,在新出葉腋內的為兩性。

the flowers are most intriguing. chinese hackberry is a polygamous plant. unisexual flowers and bisexual flowers coexist. according to the local site, hktree.com, male flowers are at the base of the twigs, bisexual flowers are under the new axil.

朴樹chinese hackberry (celtis sinensis):

order: 薔薇目rosales | family: 榆科ulmaceae (some say大麻科cannabaceae) | genus: 朴屬celtis | species: c. sinensis

參考 references:

wiki ; 維基百科 ; 香港教育局香港50種常見樹木 ; 臺中市立后里國民中學

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