bn:00017820n
Noun Concept
Categories: Articles with 'species' microformats, Garden plants, Plants described in 1753, Polemonium, Medicinal plants
EN
Jacob's ladder  Greek valerian  charity  Polemonium caeruleum  Polemonium van-bruntiae
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EN
Polemonium caeruleum, known as Jacob's-ladder or Greek valerian, is a hardy perennial flowering plant. Wikipedia