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physostegia

noun
phy·​so·​ste·​gia | \ˌfīsəˈstējēə\

Definition of physostegia 

1 capitalized : a genus of North American perennial herbs (family Labiatae) having sessile linear to oblong leaves and showy white, rose, or lavender flowers with an inflated 5-toothed calyx — see false dragonhead

2 plural -s : any plant of the genus Physostegia

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History and Etymology for physostegia

New Latin, from phys- + Greek stegē roof + New Latin -ia; akin to Greek stegein to cover, shelter

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