Pluchea sericea

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Pluchea sericea (with its woody habit and eglandular, densely arranged, sericeous leaves) is isolated among North American Pluchea. Torrey and Gray recognized its close similarity to the Asian Pluchea lanceolata (de Candolle) Oliver & Hiern, the type species of the Asian genus Berthelotia. It has been treated within Berthelotia and the South American and Central American segregate Tessaria, and a distinct genus (Eremohylema A. Nelson) has been created for it.