Are Senna Obtusifolia and Senna Siamea in the same botanical family?

Yes — both belong to Fabaceae.

Can you substitute Senna Obtusifolia for Senna Siamea?

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

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Senna Obtusifolia vs Senna Siamea

Senna obtusifolia · Senna siamea

Senna Obtusifolia

Senna obtusifolia

T Traditional Use

Family: Fabaceae
Genus: Senna
Primary use: medicinal

Senna obtusifolia, known by common names including Chinese senna, American sicklepod and sicklepod, is a plant in the genus Senna, sometimes separated in the monotypic genus Diallobus. It grows wild in North, Central, and South America, Asia, Africa, and Oceania, and is considere…

Senna Siamea

Senna siamea

T Traditional Use

Family: Fabaceae
Genus: Senna
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 (Senna) — close relatives, often substitutable.
· Both are primarily medicinal.
· Evidence tiers — Senna Obtusifolia: T; Senna Siamea: T.