noun
black locust; Robinia pseudoacacia
A deciduous tree native to North America, widely planted in Japan. Also known as 贋アカシア (false acacia).
See also: 贋アカシア
針槐は街路樹としてよく見られる。
Black locusts are often seen as street trees.
ハリエンジュの花は白くて甘い香りがする。
The flowers of the black locust are white and have a sweet fragrance.
アカシア refers to true acacias (genus Acacia), while 針槐 is a different genus (Robinia) often called 'false acacia'.
The name 針槐 (literally 'needle locust') comes from the thorns on its branches and its resemblance to the 槐 (Japanese pagoda tree).