Synonyms for Greek Valerian (same or very similar meaning)
WordNet sense 1 (erect or spreading perennial of the eastern United States):
Polemonium reptans
WordNet sense 2 (pinnate-leaved European perennial having bright blue or white flowers):
charity, Jacob's ladder, Polemonium caeruleum, Polemonium van-bruntiae, Polymonium caeruleum van-bruntiae
From the ODE community, based on WordNet
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