Basic Information:

基本資料:

Scientific Name:
Senna siamea (Lam.) H. S. Irwin & Barneby

名稱:
鐵刀木

Common Name:
Kassod tree

俗名:
黑心樹

Family Name:
Caesalpiniaceae

科屬:
蘇木科

Habit:
Evergreen tree

習性:
常綠喬木

Origin Name:

Exotic; India, Myanmar and Thailand. It has a few hundred years of cultivation history in Yunnan, China.

原產地:

外來；印度、緬甸及泰國。於中國雲南亦有數百年的栽種歷史。

Features:

特徵:

Height:
Up to 10m tall

高度:
可高達10米

Stems:
Bark of trunk grey, nearly smooth, slightly longitudinally fissured. Branchlets angled.

莖:
主幹樹皮灰色，近平滑，稍縱裂。小枝具棱。

Leaf:

Evenly pinnate, 20 to 30 cm long, with 6 to 10 pairs of leaflets. Leaflets opposite, oblong to oblong-elliptic. Apex of leaflets obtuse, emarginate and mucronate, abaxially glaucous. Base of petiole swollen, rachises longitudinally grooved.

葉:

偶數羽狀複葉，長20至30 厘米，有6至10對小葉。小葉對生，長圓形至長圓狀橢圓形；葉尖鈍圓，微凹，有短尖頭，葉底粉白色。葉柄基部腫脹，葉軸具縱槽。

Flower:

• Inflorescence axillary. Sepals 5, suborbicular, unequal. Petals 5, yellow, broadly obovate.
• Flowering: Oct - Nov

花:

• 花序腋生。萼片5塊，近圓形、不等大。花瓣5塊，黃色，闊倒卵形。
• 花期: 10 - 11月

Fruit:

• Legume, lorate, flatten, margin thickened. Purplish brown when mature, with 10 to 20 seeds.
• Fruiting: Dec - Jan

果實:

• 莢果，帶狀、扁平，邊緣加厚。成熟時紫褐色，內有10至20粒種子。
• 果期: 12 - 1月