Are Cassia Fistula and Cassia Siamea in the same botanical family?

Yes — both belong to Fabaceae.

Can you substitute Cassia Fistula for Cassia Siamea?

They are close relatives in the genus Cassia, often substitutable with flavor adjustments.

Compare · per-herb profile

Cassia Fistula vs Cassia Siamea

Cassia fistula · Cassia siamea

Cassia Fistula

Cassia fistula

T Traditional Use

Family: Fabaceae
Genus: Cassia
Primary use: medicinal

Cassia fistula, also known as golden shower, purging cassia, Indian laburnum, kani konna, or pudding-pipe tree, is a flowering plant in the family Fabaceae. The species is native to the Indian subcontinent and adjacent regions of Southeast Asia. It is the official state flower of…

Cassia Siamea

Cassia siamea

T Traditional Use

Family: Fabaceae
Genus: Cassia
Primary use: medicinal

Senna siamea, also known as Siamese cassia, kassod tree, cassod tree and cassia tree, is a legume in the subfamily Caesalpinioideae. It is native to South and Southeast Asia, although its exact origin is unknown.

At a glance

· Same genus (Cassia) — close relatives, often substitutable.
· Both are primarily medicinal.
· Evidence tiers — Cassia Fistula: T; Cassia Siamea: T.