Are Calendula and Viola Arcuata in the same botanical family?

No — Calendula is Asteraceae and Viola Arcuata is Violaceae.

Can you substitute Calendula for Viola Arcuata?

They come from different families (Asteraceae and Violaceae), so direct substitution is uncommon.

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Calendula vs Viola Arcuata

Calendula officinalis · Viola arcuata

Calendula

Calendula officinalis

T Traditional Use

Family: Asteraceae
Genus: Calendula
Primary use: medicinal

Calendula officinalis, Mary's gold, common marigold, the pot marigold, Scotch marigold, or ruddles, is a flowering plant in the daisy family, Asteraceae. It is probably native to southern Europe, but its long history of cultivation makes its precise origin unknown, and it is wide…

Viola Arcuata

Viola arcuata

T Traditional Use

Family: Violaceae
Genus: Viola
Primary use: medicinal

At a glance

· Different families — Asteraceae vs Violaceae.
· Both are primarily medicinal.
· Evidence tiers — Calendula: T; Viola Arcuata: T.