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Senna siamea (Lam.) Irwin & Barneby

Synonym: Cassia siamea Lam., Cassia florida Vahl

CAESALPINIOIDEAE

Local Names : മഞ്ഞക്കൊന്ന, Ironwood tree , Siamese senna.

Flowering Period : October to March

Distribution : Native of South East Asia; now widely cultivated

Uses: Ornamental.

Exotic : Yes.

 Trees. Leaves paripinnate, alternate, pulvinate; leaflets  opposite, estipellate; lamina oblong, elliptic-oblong, margin entire. Flowers bisexual, yellow, in terminal or axillary corymbose recemose panicles; sepals 5, greenish-yellow; petals 5, ovate-elliptic; stamens 10,upper 3 staminodes small; ovary half inferior, sessile, ovules many. Fruit a pod, long stipitate, strap-shaped, compressed woody with thick sutures.