Caesalpinia decapetala

Caesalpinia decapetala (Caesalpinia decapetala var. japonica) is a small deciduous shrub in the Fabaceae family. In Japan, it grows wild in sunny locations in the mountains and along riverbanks from Kanto to Kyushu. It is 1-2 m tall and has hooked thorns on its stems and leaves. The leaves are pinnate compound even-numbered twice, and the overall length of the leaf is 20-40 cm. The lobes are oblong-ovate, 1-2 cm long, 0.8-1 cm wide, and alternate. It produces young branches that grow into a 30 cm long inflorescence at the tip, which produces numerous yellow five-petaled flowers with a 2.5 to 3 cm corolla from March to June. The fruit is a pea-sized berry up to 10 cm long. The seeds are dried in the sun and used in Chinese herbal medicine as an antipyretic for malaria. The genus name "Caesalpinia" is a dedication to the Italian physician and botanist Andrea Caesalpinus, and the species name "decapetala" means "having 10 (de-) petals (capetala). It is a toxic plant.

Common name: Caesalpinia decapetala, Scientific name: Caesalpinia decapetala var. japonica, Origin: Eurasia, Distribution: Kanto to Kyushu in Japan, Lifestyle habitat: sunny places in mountains and along riversides, height: 1-2 m, branches have thorns, life form: deciduous vine, leaf shape: pinnate compound leaf, leaf length: 20-40 cm, leaflet shape: oblong-ovate, leaf blade length: 1-2 cm, leaf width: 0.8-1 cm, flowers symmetrical, inflorescence: alternate, inflorescence: raceme, corolla: butterfly shape, Flowering Flowering season: March to June, Flower color: yellow, Corolla: 2.5 to 3 cm, Fruit type: bean, Fruit length: 10 cm, Note: poisonous.

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