Which species is “Rhodiola”?
A substantial share of commercial “Rhodiola rosea” is actually Rhodiola crenulata (Tibetan rhodiola) — the principal documented adulterant in the rhodiola trade, with a different marker chemistry.
The species behind the name
- Rhodiola
Rhodiola rosea
Rhodiola rosea — the species of the Western clinical literature; rosavins are its species-specific markers.
- Tibetan Rhodiola
Rhodiola crenulata (Hook.f. & Thomson) H.Ohba
Rhodiola crenulata (hong jing tian) — the Chinese pharmacopoeial article; salidroside-rich but rosavin-absent — the chemistry by which substitution is caught.
How to tell what a product actually is
- Rosavin standardization (typically ~3% rosavins / 1% salidroside for rosea extracts) is the label cue — crenulata cannot meet a rosavin spec because it lacks rosavins.
- The BAPP Rhodiola bulletin (2017) documents the substitution pattern across the supply chain; NMR/HPTLC market studies found much non-compliant “rosea” contained other Rhodiola species.
Documentation
Educational use only. This page explains species identity — it makes no claim that any species works for anything, and it is never a place to decide what to take. It is not a substitute for medical advice. If you take medication, talk to your clinician or pharmacist before adding any botanical, whichever species it turns out to be.