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Black LocustπΏ
Robinia pseudoacacia
γγͺγ¨γ³γΈγ₯
A deciduous tree in the legume family. Native to North America, introduced to Japan in 1873. Also known as 'nise-acacia' (false acacia). An important honey plant β the honey from its fragrant white cascading flower clusters is prized. Used as a street tree, for erosion control, and for its hard timber.
Identification Points
- βOdd-pinnate compound leaves with elliptic leaflets
- βStipules modified into thorns
- βFragrant white pea-flowers in drooping racemes in early summer
Habitat
Street trees, parks, riverbanks (naturalized, non-native)
Season
May to June (flowers)
Morphological TraitsAI-estimated, needs verification
Leaf arrangement
Alternate
Leaf type
Compound
Growth form
Tree
Evergreen/Deciduous
Deciduous
Flower color
White
Flowering season
Spring
Habitat
Roadside
Phylogenetic Positionγγ‘η§ β
Phylogenetic Position
Angiosperms > Eudicots > Core eudicots > Fabales > Fabaceae
Divergence Era
Late Cretaceous to Paleogene (approx. 70β60 million years ago)
Sources & References
AI-generated, needs verification